can you please explain how you got each number please? I'm taking this class online and it has been hard for me to understand.

2020 Tax Rate Schedules Individuals Schedule X-Single If taxable income is over:But not over: The tax is: $ 0 $ 9,875 10% of taxable income $ 9,875 $ 40,125 $987.50 plus 12% of the excess over $9,875 $ 40,125 $ 85,525 $4,617.50 plus 22% of the excess over $40,125 $ 85,525 $163,300 $14,605.50 plus 24% of the excess over $85,525 $163,300 $207,350 $33,271.50 plus 32% of the excess over $163,300 $207,350 $518,400 $47,367.50 plus 35% of the excess over $207,350 $518,400 $156,235 plus 37% of the excess over $518,400 Chuck, a single taxpayer, earns $57,000 in taxable income and $19,900 in interest from an investment in City of Heflin bonds. (Use the U.S tax rate schedule.) Required: a. How much federal tax will he owe? b. What is his average tax rate? c. What is his effective tax rate? d. What is his current marginal tax rate? Complete this question by entering your answers in the tabs below. Req A Req B Reqc Req D How much federal tax will he owe? (Do not round intermediate calculations. Round "Federal tax" to nearest whole dollar amount.) Federal tax