What is the difference in KCSB's monthly costs between accepting the proposal and rejecting the proposal?

KCSB expects to produce and sell 2,550 bicycles per month in the coming year. The bicycles sell for $650 each. additional fixed costs. REQUIRED [Note: Round unit cost computations to the nearest cent] the difference as a positive number; if the accept costs are more than the reject costs, enter the difference as a negative number.)