Poppy Co. uses a periodic inventory system. Beginning inventory on January 1 was understated by $30,200, and its ending inventory on December 31 was understated by $15,400. In addition, a purchase of merchandise costing $21,400 was incorrectly recorded as a $2,140 purchase. None of these errors were discovered until the next year. As a result, Poppy's cost of goods sold for this year was: