Please show all rough work so I can understand the method used. Thank you!

Pianos, Inc. purchases pianos from a well-known manufacturer and sells them at the retail level. The pianos sell, on the average, for $2,600 each. The average cost of a piano from the manufacturer is $1,750. House of Pianos, Inc. has always kept careful records of its costs. The costs that the company incurs in a typical month are presented below: Costs Selling: Advertising Delivery of Pianos Sales Salaries and Commissions Utilities Depreciation of Sales Facilities Administrative: Executive Salaries Depreciation of Office Equipment Clerical Insurance Cost Formula $1,700.00 per month $80.00 per piano sold $4,500.00 per month, plus 3% of sales $800.00 per month $4,600.00 per month $16,500.00 per month $700.00 per month $2,950.00 per month, plus $50 per piano sold $750.00 per month During November, the company sold and delivered 95 pianos. 1. Prepare a Contribution Format income statement for November with costs organized by behaviour. Show costs and revenues on both a total and a per unit basis down through contribution margin. - 12 marks