Selected accounting data as at December 31, 2020 for The Hair Salon follows: Sales revenue Depreciation expense-equipment Rental Revenue Salary expense Rent expense Cost of goods sold $ 535,400 12,500 18,700 137,500 124,700 57,000 Utilities expense 35,500 Insurance expense 10,700 Office supplies expense 23,500 Sales discounts 14,600 Interest expense 1,800 Sales returns and allowance 11,700 REQUIRED: Compute the following amounts a. Net Sales b. Total operating expenses c. Other revenues and expenses. d. Gross profit