The following information ($ in millions) comes from a recent annual report of Amazon.com, Inc.: Net sales $ 10,805 Total assets 4,477 End of year balance in cash 1,023 Total stockholders' equity 479 Gross profit (Sales Cost of Sales) 2,456 Net increase in cash for the year 27 Operating expenses 2,053 Net operating cash flow 678 Other income (expense), net (24) Compute Amazon's balance in cash at the beginning of the year.