Demarco and Janine Jackson have been married for 20 years and have four children who qualify as their dependents (Damarcus, Janine, Michael, and Candice). The couple received salary income of $100,000, qualified business income of $10,000 from an investment in a partnership, and they sold their home this year. They initially purchased the home three years ago for $200,000 and they sold it for $250,000. The gain on the sale qualified for the exclusion from the sale of a principal residence. The Jacksons incurred $16,500 of itemized deductions, and they had $3,550 withheld from their paychecks for federal taxes. They are also allowed to claim a child tax credit for each of their children. However, because Candice is 18 years of age, the Jacksons may claim a child tax credit for other qualifying dependents for Candice. (2018)

Complete the first of the Jacksons' Form 1040 (use the most recent form available).

how i got 24,000 on the Standard deducation or itemized deducation (from schedule A) ?

and i got 2,000 i am confused about this number can you tell me how i calculate this?

how can i calculate a total tax i got 8,499 but it shows wrong answer ?

how can calculate a child tax credit/ credit for other dependents ?