Suppose that you must prepare quarterly financial statements, and the following table has been started. From examination of prior years' financial statements, you know that the gross profit margin is 20%. Calculate the unknown balances using the gross profit method. Do not enter dollar signs, negative signs, or commas in the input boxes. Sales $210,000 Cost of Goods Sold Opening Inventory $117,000 Purchases $127,000 Cost of Goods Available for Sale $ Closing Inventory Total Cost of Goods Sold Gross Profit