Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 540 units @ $50 per unit $27,000 Purchases: January 540 units @ $55 per unit 10: January 1,020 units @ $56 per unit 20: Sales: January 910 units 12: January 790 units 28: 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