Marwick's Pianos, Incorporated, purchases pianos from a large manufacturer for an average cost of $$1,484$ per unit and then sells them to retail customers for an average price of $$2,600$ each. The company's selling and administrative costs for a typical month are presented below:

$\backslash$table$[[$Costs$,$Cost Formula$],[$Selling:$,$$$945$ per month$],[$Advertising$,$$$4,829$ per month, plus $4\%$ of sales$],[$Sales salaries and commissions,$$61$ per piano sold$],[$Delivery of pianos to customers,$$644$ per month$],[$Utilities$,$$$4,998$ per month$],[$Depreciation of sales facilities,$],[$Administrative:$,$$$13,453$ per month$],[$Executive salaries,$$689$ per month$],[$Insurance$,$$$2,472$ per month, plus $$40$ per piano sold$],[$Clerical$,$$$914$ per month$]]$

During August, Marwick's Pianos, Incorporated, sold and delivered $60$ pianos