Calculate (A)net Sales, (B)gross Profit, (C)total Operating Expenses, and (D)net

Short Answer

Calculate (A)net sales, (B)gross profit, (C)total operating expenses, and (D)net income.
Sales returns $850, rent expense $1,355, sales discounts $1,200, depreciation expense $510, cost of merchandise sold $6,500, gross sales $19,500, advertising expense $400, salary expense $2,100, heat expense $750.