The following is from the 2021 annual report of Kaufman Chemicals, Inc.: Statements of Comprehensive Income Net income Other comprehensive income: Change in net unrealized gains on AFS investments, net of tax of $15, ($13), and $13 in 2021, 2020, and 2019, respectively Other Total comprehensive income Years Ended December 311 2021 $823 2020 $653 2019 $508 27 (20) 22 (2) (1) 21 $848 $632 $532 Kaufman reports accumulated other comprehensive income in its balance sheet as a component of shareholders' equity as follows: (5 in millions) 2021 Shareholders' equity: 2020 Common stock 315 315 Additional paid-in capital 7,868 7,868 Retained earnings 6,948 6,392 Accumulated other comprehensive income 91 66 Total shareholders' equity $15,222 $14,641 Required: 4. From the information provided, determine how Kaufman calculated the $91 million accumulated other comprehensive income in 2021. (Negative amount should be indicated by a minus sign. Enter your answers in millions (i.e., 10,000,000 should be entered as 10).) ($ in millions) Accumulated other comprehensive income, 2020