The following information ($ in millions) comes from a recent annual report of Amazon.com, Inc.:

Net sales $ 10,894

Total assets 4,378

End of year balance in cash 1,079

Total stockholders' equity 368

Gross profit (Sales Cost of Sales) 2,488

Net increase in cash for the year 18

Operating expenses 2,047

Net operating cash flow 700

Other income (expense), net (12)

Compute Amazon's balance in cash at the beginning of the year.?