Tell how longer you will be on fire for with 1 command

This command below will give you a command block
/give @p command_block
The big command below will tell you how much longer you will be on fire for when playing minecraft!
Paste the following into a command block

/summon FallingSand ~ ~1 ~ {Block:command_block,Data:1,TileEntityData:{Command:/gamerule commandBlockOutput false},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:/fill ~1 ~-2 ~-1 ~4 ~9 ~2 minecraft:nether_brick 0 hollow},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:/fill ~1 ~-2 ~ ~4 ~6 ~1 stained_glass 14 replace minecraft:nether_brick},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:/fill ~2 ~-3 ~-1 ~3 ~5 ~2 minecraft:stained_glass 14 replace minecraft:nether_brick},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:/fill ~1 ~-4 ~-1 ~4 ~4 ~2 minecraft:iron_bars 0 replace minecraft:nether_brick},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:/tellraw @p ["",{"text":"Installing...","color":"green"}]},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:summon FallingSand ~2 ~-6 ~1 {id:FallingSand,Time:1,Block:chain_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 13 {Fire:260s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:5,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 12 {Fire:240s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:5,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 7 {Fire:140s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:5,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 2 {Fire:40s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:260s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:5,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:240s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:5,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:140s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:5,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:40s}},Passengers:[{id:FallingSand,Time:1,Block:command_block,Data:4,TileEntityData:{Command:/fill ~-1 ~-9 ~1 ~2 ~2 ~-2 air}}]}]}]}]}]}]}]}]}},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:summon FallingSand ~2 ~-6 ~ {id:FallingSand,Time:1,Block:chain_command_block,Data:3,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 14 {Fire:280s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 9 {Fire:180s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:3,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 8 {Fire:160s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:3,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 3 {Fire:60s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:3,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:280s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:180s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:3,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:160s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:3,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:60s}}}]}]}]}]}]}]}]}},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:summon FallingSand ~3 ~-8 ~ {id:FallingSand,Time:1,Block:chain_command_block,Data:4,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 15 {Fire:300s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:4,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 10 {Fire:200s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 5 {Fire:100s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:4,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 4 {Fire:80s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:4,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:300s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:4,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:200s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:100s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:4,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:80s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:4,TileEntityData:{auto:1b,Command:/scoreboard objectives add FireLong dummy}}]}]}]}]}]}]}]}]}},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:summon FallingSand ~3 ~-9 ~1 {id:FallingSand,Time:1,Block:repeating_command_block,Data:2,TileEntityData:{auto:1b,Command:/scoreboard players tag @a remove FireTick },Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:2,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 11 {Fire:220s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:2,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 6 {Fire:120s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 1 {Fire:20s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:2,TileEntityData:{auto:1b,Command:/scoreboard players set @a FireLong 0 {Fire:-20s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:2,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:220s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:2,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:120s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players tag @a add FireTick {Fire:20s}},Passengers:[{id:FallingSand,Time:1,Block:chain_command_block,Data:2,TileEntityData:{auto:1b,Command:/tellraw @a[tag=FireTick] ["",{"text":"Fire has ","color":"blue"},{"score":{"name":"@a[c=1,score_FireLong_min=1]","objective":"FireLong"},"color":"gold","bold":true},{"text":" seconds left","color":"blue","bold":false}]}}]}]}]}]}]}]}]}]}},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:/tellraw @p ["",{"text":"installation complete!","color":"green"},{"text":"\nYou have installed  ","color":"dark_purple"},{"text":"Fire Tracker","color":"red","italic":true,"underlined":true},{"text":" by","color":"dark_purple","italic":false,"underlined":false},{"text":" Curcuit_Block","color":"gold"},{"text":"\n please check out theses links!","color":"blue"},{"text":"\nCurcuit_Block's Twitter!","color":"aqua","clickEvent":{"action":"open_url","value":"https://twitter.com/CurcuitBlock"}},{"text":"\nCurcuit Block's YouTube!","color":"dark_red","clickEvent":{"action":"open_url","value":"https://www.youtube.com/channel/UCZQfwDQXOd_XOyzJHat6Bcg"}}]},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:chain_command_block,Data:1,TileEntityData:{Command:/fill ~ ~2 ~ ~ ~-11 ~ air},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:command_block,Data:1,TileEntityData:{Command:blockdata ~ ~-12 ~ {auto:1b}},Time:1,DropItem:0,Passengers:[{id:"FallingSand",Block:redstone_block,Data:0,Time:1,DropItem:0}]}]}]}]}]}]}]}]}]}]}]}]}]}