The following information ($ in millions) comes from a recent annual report of Amazon.com, Inc.: Net sales $ 10,883 Total assets 4,414 End of year balance in cash 1,035 Total stockholders' equity 498 Gross profit (Sales Cost of Sales) 2,457 Net increase in cash for the year 19 Operating expenses 2,056 Net operating cash flow 772 Other income (expense), net (21) Compute the income before income tax for Amazon.