Maybe try x = (count x 1000) % 408168
x will roll over to zero every time count = 408168
flash your light when x=0, 68028, 136056, 204084, etc.
% = modulo
https://www.arduino.cc/en/pmwiki.php?n=Reference/Modulo
Maybe try x = (count x 1000) % 408168
x will roll over to zero every time count = 408168
flash your light when x=0, 68028, 136056, 204084, etc.
% = modulo
https://www.arduino.cc/en/pmwiki.php?n=Reference/Modulo