company purchases battery powered bikes from a manufacturer for $1,500 per unit and then sells them to its customers for $2,800 each. The company's monthly selling and administrative costs are the following: Costs Selling: Advertising Sales salaries and commissions Delivery of bikes to customers Utilities Depreciation of sales facilities Administrative: Executive salaries Insurance Clerical Depreciation of office equipment Last month Cost Formula $ 952 per month $ 4,777 per month, plus 3% of sales $60 per unit sold $ 654 per month $ 5,005 per month $ 13,574 per month $ 695 per month $ 2,506 per month, plus $40 per unit sold $ 945 per month sold 63 units. How much was the company's total contribution margin for the month?