3) 5-27. Methods of Estimating Costs: Account Analysis The accounting records for Frankie's Fixtures report the following production costs for the past year: Production was 210,000 units. Fixed manufacturing overhead was $480,000. For the coming year, costs are cxpected to increase as follows: dircet materials costs by 20 percent, excluding any effect of volume changes; direct labor by 4 percent: and fixed manufacturing overhead by 10 percent. Variable manufacturing overhead per unit is expected to remain the same. Required a. Prepare a cost estimate for a volume level of 220,000 units of product this year. b. Determine the costs per unit for last year and for this year