Billingsly Products uses the conventional retail method to estimate its ending inventories. The following data has been summarized for the year 2021 Inventory, January 1 Purchases Net markups Net markdowns Net sales Cost Retail $ 51,000 $ 77,000 321,900 465, 200 7,800 16,500 390,000 Required: Estimate the ending inventory as of December 31, 2021. (Round "Cost-to-retail percentage" to 1 decimal place.) Estimated ending inventory at retail Estimated ending inventory at cost