RF/T manager server

print("start")
modem = peripheral.find("modem")
modem.open(1884)
monitor = peripheral.find("monitor")
if fs.exists("log") then
log = fs.open("log", "r")
b = log.readAll()
print(b)
if tonumber(b) == nil then
print("b is 0 wtf")
b = 1
end
log.close()
else
print("Log not there!")
end
while true do
local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")
if senderChannel == 1884 and message ~= nil then
print("writing")
monitor.clear()
monitor.setCursorPos(1, 1)
monitor.write("Mervin..")
monitor.setCursorPos(1, 4)
a = tonumber(message[1]) + tonumber(b)
print(a)
a = math.floor(a / 1000000)
monitor.write("MRF Total: "..a)
monitor.setCursorPos(1, 6)
monitor.write("RF/T: "..message[2])
fs.delete("log")
log = fs.open("log", "w")
log.write(a)
log.close()
end
end