Calculate the missing numbers in the following situations. (Input all amounts as positive values.) b Invoice cost of merchandise purchases Purchase discounts Purchase returns and allowances Cost of transportation-in Merchandise inventory (beginning of period) Net cost of merchandise purchases Merchandise inventory (end of period) Cost of goods sold $ 44,200 $ 21,200 $ 16,450 2,200 335 1,600 770 570 1,850 2.200 4.700 3,700 44.900 19,850 2,300 3,850 $ 21,000 S 17,265