On January 1, 2021, Casselberry Retailers had inventory of $49,900. On December 31, 2021, total inventory on hand was $66,800. Casselberry reported the following account balances on December 31: Freight in $5,200 Purchases 510,200 Purchase returns and allowances 1,200 Purchase discounts 6,200 Sales 838,800 Sales discounts 5.200 Sales returns and allowances 9,900 Calculate Casselberry Retailers' 2021 gross profit. Gross profit $ eTextbook and Media Calculate Casselberry Retailers' 2021 operating expenses if profit is $130,500 and there are no non-operating activities. Operating expenses $ eTextbook and Media