Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 638 units @ $55 per unit $34,650 Purchase January 10: 630 units @ $60 per unit January 20: 1,260 units $62 per unit Sales: January 121 900 units January 28: 770 units Required: Compute the January 31 ending inventory and cost of goods sold for January, assuming Denver uses average cost and a perpetual Inventory system. (Do not round intermediate calculations. Round your final answers to nearest whole dollar amount.) Ending inventory Cost of goods sold