9-6 Estimated Payments (LO 9.2) Kana is a single wage earner with no dependents and taxable income of $168,700 in 2021. Her 2020 taxable income was $155,000 and tax liability was $31,375. Calculate Kana's 2021 income tax liability and the minimum required 2021 annual payment necessary to avoid any penalty. Round your answers to two decimal places. Kana's 2021 income tax liability: $ Kana's minimum required 2021 annual payment necessary to avoid any penalty: $