Marwicks Pianos, Inc., purchases pianos from a large manufacturer and sells them at the retail level. The pianos cost, on the average, $1,484 each from the manufacturer. Marwicks Pianos, Inc., sells the pianos to its customers at an average price of $3,200 each. The selling and administrative costs that the company incurs in a typical month are presented below: can you help me prepare a contribution statement for this company i am stuck

Costs	Cost Formula
Selling:
Advertising	$943 per month
Sales salaries and commissions	$4,802 per month, plus 5% of sales
Delivery of pianos to customers	$60 per piano sold
Utilities	$634 per month
Depreciation of sales facilities	$4,981 per month
Administrative:
Executive salaries	$13,451 per month
Insurance	$694 per month
Clerical	$2,451 per month, plus $38 per piano sold
Depreciation of office equipment	$934 per month