Crane Camping Supply sells harsh weather tents. The company has the following income statement. Sales ($1,040 per unit) $208,000 Less: Cost of Goods sold ($500 per unit) 100,000 Gross margin 108,000 Less: Operating costs Salaries $41,600 Advertising 10,400 Sales commissions ($5 per unit) 1,000 Shipping ($15 per unit) 3,000 56,000 Operating income $52,000 Calculate the contribution margin per unit. (Round answers to O decimal places, e.g. 25,000.) Contribution margin per unit $