According to Amazon's balance sheet and the income statement, please calculate all the liquidity ratios, including current ratio, quick ratio, cash ratio, inventory turnover, and accounts receivable turnover.

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AMAZON.COM, INC. CONSOLIDATED BALANCE SHEETS (in millions, except per share data) December 31, 2015 2016 ASSETS Current assets: Cash and cash equivalents Marketable securities Inventories Accounts receivable, net and other Total current assets Property and equipment, net Goodwill Other assets Total assets 15,890 $ 3,918 10,243 5,654 35,705 21,838 3,759 3,445 64,747 $ 19,334 6,647 11,461 8,339 45,781 29,114 3,784 4,723 83,402 20,397 $ 10,372 3,118 33,887 8,227 9,249 25,309 13,739 4,768 43,816 7,694 12,607 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable Accrued expenses and other Unearned revenue Total current liabilities Long-term debt Other long-term liabilities Commitments and contingencies (Note 7) Stockholders' equity: Preferred stock, $0.01 par value: Authorized shares - 500 Issued and outstanding shares - none Common stock, $0.01 par value: Authorized shares - 5,000 Issued shares 494 and 500 Outstanding shares - 471 and 477 Treasury stock, at cost Additional paid-in capital Accumulated other comprehensive loss Retained earnings Total stockholders' equity Total liabilities and stockholders' equity (1,837) 13,394 (723) 2,545 13,384 64,747 S (1,837) 17,186 (985) 4,916 19,285 83,402 AMAZON.COM, INC. CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (in millions) Common Stock Accumulated Other Comprehensive Income (Loss) Additional Paid-In Capital Treasury Stock Retained Earnings Total Stockholders Equity Amount 459 $ 5 $ (1,837) $ 9,573 $ (185) $ 2,190 S (241) 9,746 (241) (326) (326) Balance as of January 1, 2014 Net loss Other comprehensive income (loss) Exercise of common stock options Excess tax benefits from stock-based compensation Stock-based compensation and issuance of employee benefit plan stock Issuance of common stock for acquisition activity Balance as of December 31, 2014 Net income Other comprehensive income (loss) 1,510 1,510 44 11,135 (1,837) 1.949 5 - (1,837) 11,135(511) - - (212) 44 10,741 596 (212) 596 - (212) 596 | ||| (212) TILL 119 | 2,131 | Net income Other comprehensive income (loss) Exercise of common stock options Excess tax benefits from stock-based compensation Stock-based compensation and issuance of employee benefit plan stock Issuance of common stock for acquisition activity Balance as of December 31, 2015 Net income Other comprehensive income (loss) Exercise of common stock options Excess tax benefits from stock-based compensation Stock-based compensation and issuance of employee benefit plan stock Balance as of December 31, 2016 (1,837) 2,545 13,384 13,394 - (723) 2,545 2,371 (262) 2,371 | ||| (262) 829 | 829 477 $ 5$ (1,837) $ 2,962 17,186 $ (985) $ 4,916 S 2,962 19,285