I need help with questions 15 & 16, thank you!

15. Calculate the Debt Ratio for the two years presented for the following company. Between the 2 years, does the ratio show improvement and why? 16. Calculate the Current ratio for the two years presented using the following information. Between the 2 years, does the ratio show improvement and why? Balance Sheet of Amazon. Dec. 31, 2019 Dec 31, 2018 $36,092 18,929 20,497 20,816 96,334 72,705 25,141 14,754 16,314 225,248 $ 31,750 9,500 17,174 16,677 75,101 61,797 0 14,548 11,202 162,648 Current assets: Cash and cash equivalents Marketable securities Inventories Accounts receivable, net and other Total current assets Property and equipment, net Operating leases Goodwill Other assets Total assets Current liabilities: Accounts payable Accrued expenses and other Unearned revenue Total current liabilities Long-term lease liabilities Long-term debt Other long-term liabilities Total Liabilities Stockholders' equity: Common stock Treasury stock, at cost 47,183 32,439 8,190 87,812 39,791 23,414 12,171 163,188 38,192 23,663 6,536 68,391 9,650 23,495 17,563 119,099 (1,837) (1,837) Additional paid-in capital Accumulated other comprehensive income (loss) Retained earnings Total stockholders' equity Total liabilities and stockholders' equity 33,658 (986) 31,220 62,060 $ 225,248 26,791 (1,035) 19,625 43,549 $ 162,648 Income Statement for Amazon. Statements of Operations - USD ($) shares in Millions, $ in Millions Total net sales Cost of sales Gross Profit Fulfillment Technology and content Marketing General and administrative Other operating expense (income), net Total operating expenses Operating income Interest income Interest expense Other income (expense), net Total non-operating income (expense) Income before income taxes Provision for income taxes Equity-method investment activity, net of tax Net income 201 12 Months Ended Dec 31, 2019 Dec 31, 2018 $ 280,522 $ 232,887 165,536 139,156 114,986 93,731 40,232 34,027 35,931 28,837 18,878 13,814 5,203 4,336 296 265,981 220,466 14,541 12,421 832 440 (1,600) (1,417) 203 (183) (565) (1,160) 13,976 11,261 (2,374) (1,197) (14) $ 11,588 $ 10,073