need help with the following

Assuming that Oriole Company uses a periodic inventory system and has these account balances: Purchases $ 412,000; Purchase Returns and Allowances $ 12,000; Purchase Discounts $ 7,700; and Freight-in $ 16,200. Oriole Company has beginning inventory of $ 62,300, ending inventory of $ 92,600, and net sales of $ 645,900. 1. Determine the amounts to be reported for cost of goods sold and gross profit.