Compute cost of goods purchased, cost of goods sold, gross margin, total operating (period) costs, operating income

Question 14 2-36. The following data are for Mama Retail Outlet Stores. The account balances (in thousands) are for 20X. \begin{tabular}{|l|l|} \hline Marketing and advertising costs & $54,000 \\ \hline Merchandise inventory, January 1,2020 & $94,000 \\ \hline Shipping of merchandise to customers & $10,000 \\ \hline Depreciation on store fixtures & $8,800 \\ \hline Purchases & $521,000 \\ \hline General and administrative costs & $63,000 \\ \hline Merchandise inventory, December 31,2020 & $101,000 \\ \hline Merchandise freight-in & $21,000 \\ \hline Purchase returns and allowances & $25,000 \\ \hline Purchase discounts & $22,000 \\ \hline Revenues & $690,000 \\ \hline \end{tabular}