The following information ($ in millions) comes from a recent annual report of Amazon.com, Inc.: $10,838 4,394 1,085 Net sales Total assets End of year balance in cash Total stockholders' equity Gross profit (Sales - Cost of Sales) Net increase in cash for the year Operating expenses Net operating cash flow Other income (expense), net 405 2,656 21 2,049 668 (14) Compute Amazon's balance in cash at the beginning of the year