Waterway Sports sells volleyball kits that it purchases from a sports equipment distributor. The following static budget based on sales of 2,500 kits was prepared for the year. Fixed operating expenses account for 75% of total operating expenses at this level of sales. Prepare a flexible budget based on sales of 1,200, 2,640, and 3,820 units. (Round unit values to 2 decimal places e.g. 15.25 and all other answers to 0 decimal places, e.g. 1525. If operating income is negative, enter amounts using a negative sign preceding the number e.g. -45 or parentheses e.g. (45).)