Exercise 11-6 (Part Level Submission) Sheffield Corporation manufactures a single product. Monthly production costs incurred in the manufacturing process are shown below for the production of 2,700 units. The utilities and maintenance costs are mixed costs. The fixed portions of these costs are $500 and $400, respectively. Production in Units 2.700 Production Costs Direct materials $6,480 Direct labor 18,900 Utilities 2,390 Property taxes 1,300 Indirect labor 4,050 Supervisory salaries 1,900 Maintenance 1,210 Depreciation 3,900 (b) Calculate the expected costs when production is 4,700 units. Cost to produce 4,700 units $ $