Ohno Company specializes in manufacturing a unique model of bicycle helmet. The model is well accepted by consumers, and the company has enough orders to keep the factory production at 10,000 helmets per month (80% of its full capacity). Ohno's monthly manufacturing cost and other expense data are as follows. Rent on factory equipment $11,600 Insurance on factory building 1,600 Raw materials (plastics, polystyrene, etc.) 84,000 Utility costs for factory 900 Supplies for general office 300 Wages for assembly line workers 62,900 Depreciation on office equipment 900 Miscellaneous materials (glue, thread, etc.) 1,400 Factory manager's salary 6,200 Property taxes on factory building 500 Advertising for helmets 14,500 Sales commissions 10,700 Depreciation on factory building 1,700