When I try to add up the #'s myself, I come up $2,550,000 short. This amount is also the same as the CARRYOVER BONUS OVERAGES which I've already included.
Am I suppose to put this in twice? I've tried finding something to explain this, but am at a loss.

I have done the calculations manually and everything adds up accurately. Are you sure you didn't make a mistake?

Carryover bonus overages need to be included in your summation.