Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 570 units $50 per unit $28,500 Purchases: January 10: 570 units $60 per unit 01:12:40 January 20: 1,060 units $61 per unit Sales January 12: 1,000 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 periodic inventory system. (Do not round intermediate calculations. Round your final answers to nearest whole dollar amount.) Ending inventory Cost of goods sold