testformatu

m = peripheral.wrap("monitor_0")

function comma_value(amount)
   local formatted = amount
   local swap = false
   if formatted < 0 then
      formatted = formatted*-1
      swap = true
   end
   while true do
      formatted, k = string.gsub(formatted, "^(%d+)(%d%d%d)", '%1,%2')
      if k == 0 then
         break
      end
   end
   if swap then
     formatted = "-"..formatted
   end
   return formatted
end

m.write(comma_value(math.floor(energy)).. "RF/t")