The following information ($ in millions) comes from a recent annual report of Amazon.com, Inc: 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 $10,816 4,399 1,079 521 2,606 15 2,058 748 (17) Compute the income before income tax for Amazon