Shown below is actlvity for one of the products of Denver Office Equipment: January 1 balance, 580 units $60 per unit $34,800 Purchases: January 10: 580 units $65 per unit January 20: 1,040 units $68 per unit Sales: January 12: 900 units January 28: 780 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. Note: Do not round intermediate calculations. Round your final answers to nearest whole dollar amount