i need help performing these 17 ratios based on these statements. step by step explanation

Profitability Ratios Gross profit margin Gross profit Revenue Return on sales (total profit margin) Net Income Revenue Return on assets Net Income Total Assets Return on equity Net Income Total Equity Asset Management Ratios A/R Turnover Revenues Average A/R Average days of receivables 365 A/R Turnover Inventory Turnover Cost of Goods Sold Average Inventory Average days of inventory 365 Inventory Turnover Total asset turnover Revenues Total Assets Liquidity Ratios Current ratio Current Assets Current Liabilities Quick ratio (aka Acid-Test ratio) (Cash + A/R + Marketable Securities) Current Liabilities A/P Turnover Cost of Goods Sold Average Payables Average days of payables 365 A/P Turnover Solvency Ratios Financial Leverage Total Assets Total Equity Long-Term Debt to Assets Long-Term Debt (including current portion) Total Assets Long-Term Debt to Equity Long-Term Debt (including current portion) Total Equity Interest Coverage (Net Income before taxes + Interest Expense) Interest Expense

Amazon.com Inc. Common-Size Consolidated Balance Sheet: Assets Amazon.com Inc. Common-Size Consolidated Income Statement Amazon.com Inc. Common-size Consolidated Balance Sheet: Liabilities and Stockholders' Equity