Help! I need help finding out the price of 1 helmet based on this information. This is what the problem is what I have solved thus far. The very last part of this problem is the part I can't figure out. I tried diving my (DM + DL + MO)/Sales and it sales it work. So how do I figure this out based on the information provided and what I have solved?

Problem 1-1A Lott 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). Lott's monthly manufacturing cost and other expense data are as follows Rent on factory equipment Insurance on factory building Raw materials (plastics, polystyrene, etc.) Utility costs for factory Supplies for general office Wages for assembly line workers Depreciation on office equipment Miscellaneous materials (glue, thread, etc.) Factory manager's salary Property taxes on factory building Advertising for helmets Sales commissions Depreciation on factory building $9,130 2,460 82,230 930 360 55,140 900 1,320 6,390 460 14,500 9,370 1,690