Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 670 units @ $60 per unit $40,200 Purchases: January 10: 670 units @ $54 per unit January 20: 1,060 units @ $60 per unit Sales: January 12: 900 units January 28: 800 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