Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 590 units @$50 per unit $29,500 Purchases: January 10: 590 units @ $50 per unit January 20:1,020 units @ \$60 per unit Sales: January 12: 840 units January 28: 790 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. Note: Do not round intermediate calculations. Round your final answers to nearest whole dollar amount