Problem 6-65A Applying the Cost of Goods Sold Model The following amounts were obtained from the accounting records of Rabren Supply Company: Required: Compute the missing amounts. 2018 2019 Net sales $359,620 $423,150 Cost of goods sold: Beginning inventory $36,800 $ Purchases 301,600 Goods available for sale Ending inventory (42,780) Cost of goods sold 289,700 Gross margin $116,450