Code:
on *:TEXT:!break*:#: { break $chan $$1- }

alias break {
  write -c break.txt
  write break.txt msg $1 4-- Bombing Run4 $2 with4 $3 $+ $4 jets. 4RAW (100% weapons) $4-
  write break.txt msg $1 4--7 $round($calc($3 / 1.1),2) $+ $4 @ 110% --10 $round($calc($3 / 1.15),2) $+ $4 @ 115% --7 $round($calc($3 / 1.2),2) $+ $4 @ 120% --10 $round($calc($3 / 1.25),2) $+ $4 @ 125% --7 $round($calc($3 / 1.3),2) $+ $4 @ 130%
  write break.txt msg $1 4--7 $round($calc($3 / 1.35),2) $+ $4 @ 135% --10 $round($calc($3 / 1.4),2) $+ $4 @ 140% --7 $round($calc($3 / 1.45),2) $+ $4 @ 145% --10 $round($calc($3 / 1.5),2) $+ $4 @ 150% --7 $round($calc($3 / 1.55),2) $+ $4 @ 155%
  write break.txt msg $1 4--7 $round($calc($3 / 1.6),2) $+ $4 @ 160% --10 $round($calc($3 / 1.65),2) $+ $4 @ 165% --7 $round($calc($3 / 1.7),2) $+ $4 @ 170%
  write break.txt msg $1 4-- Only send 33% of your jets MAX! Report what breaks!
  write break.txt msg $1 4-- Do not attack with less than 88% readiness. Readiness targets in topic.
  .play $1 break.txt
}

!break 500
try it like that 500k cant be calculated because its got the letter K
Plus I made an error in not passing the channel name to the alias and not adjusting the $identifiers.
As far as the rest of the code I didnt look that part over.
If all you post is !break 500 then only the first line will have any value.