all apart of one question, numbers 8-16 were all incorrect help plz

Use the following to answer questions 717 During September, KC Company sells 3,910 watches for $270.00 each. The company has the following inventory purchase transactions for September: 7. $1,055,700 What were company's sales for the period? For questions 810 assume the company uses First-in, First-out (FIFO) inventory valuation. 8. $298, SOC Calculate ending inventory (FIFO) Chapter 6 Page 6-1 9. \$193,000 Calculate cost of goods sold (FIFO) 10. $862,700 Calculate gross profit (FIFO) For questions 11-13 assume the company uses Last-in, First-out (LLFO) inventory valuation. 11. $394,000 Calculate ending inventory (LLFO) 12. $540,000 Calculate cost of goods sold (LLIFO) 13. $515,700 Calculate gross profit (UFO) For questions 14-16 assume the company uses Weighted Average cost inventory valuation. 14. $390,000 Calculate ending inventory (WA) 15. \$202.4 Calculate cost of goods sold (WA) 16. $676 Calculate gross profit (WA)