Perform a vertical and horizontal income analysis on the following income statement. Please give an explanation/show formulas used.

- For the horizontal analysis, please include current and prior year ratios for return on assets, return on equity, and ratio of total liabilities to total stock equity.

2020 21,331 S 561 AMAZON.COM, INC. CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (in millions) Year Ended December 31, 2018 2019 Net income 10.073 $ 11,588 S Other comprehensive income (loss): Net change in foreign currency translation adjustments: Foreign currency translation adjustments, net of tax of $6,5), and S(36 (538) 78 Reclassification adjustment for foreign currency translation included in "Other operating expense (income), net," net of tax of $0, $29, and $0 (108) Net foreign currency translation adjustments (538) (30 Net change in unrealized gains (losses) on available-for-sale debt securities: Unrealized gains (losses), net of tax of S0, S(12), and S(83) (17) 83 Reclassification adjustment for losses (gains) included in "Other income (expense), net," net of tax of $0, S0, and $8 8 Net unrealized gains (losses) on available-for-sale debt securities 79 Total other comprehensive income (loss) 49 Comprehensive income $ 9.526 S 11.637 $ 561 273 (28) 245 806 22,137 See accompanying notes to consolidated financial statements. CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (in millions) Year Ended December 31, 2018 2019 2020 Net income $ 10,073 $ 11,588 $ 21,331 (538 78 561 (108 (538) (30 561 Other comprehensive income (loss): Net change in foreign currency translation adjustments: Foreign currency translation adjustments, net of tax of S6, S(5), and $(36) Reclassification adjustment for foreign currency translation included in Other operating expense (income), net, net of tax of So, s 29, and $0 Net foreign currency translation adjustments Net change in unrealized gains (losses) on available-for-sale debt securities: Unrealized gains (losses), net of tax of S7, S(12), and S(83) Reclassification adjustment for losses (gains) included in Other income (expense), net, net of tax of $0, $0, and $8 Net unrealized gains (losses) on available-for-sale debt securities Total other comprehensive income (loss) Comprehensive income (17 83 273 8 (28) (9 79 245 (547 49 806 $ 9,526 11.637 $ 22.137