Shown below is activity for one of the products of Denver Office Equipment: January 1 balance, 650 units. 860 per unit $39.000 Purchase January 101 650 unita S65 per unit January 201 1.200 units 570 per unit satest January 12: 1,000 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. (Do not round intermediate calculations. Round your final answers to nearest whole dollar amount.)