Each Required has a drop-down underneath Standard Deduction

Thank you please explain in detail so I can understand how you got the answer!

Trevor is a single individual who is a cash-method, calendar-year taxpayer. For each of the next two years (2022 and 2023 ), Trevor expects to report salary of $82,000, contribute $8,100 to charity, and pay $2,850 in state income taxes. Required: a. Estimate Trevor's taxable income for 2022 and 2023 using the 2022 amounts for the standard deduction for both years. b. Now assume that Trevor combines his anticipated charitable contributions for the next two years and makes the combined contribution in December of 2022. Estimate Trevor's taxable income for each of the next two years using the 2022 amounts for the standard deduction. c. Trevor plans to purchase a residence next year, and he estimates that additional property taxes and residential interest will cost $2,100 and $11,500, respectively, each year. Estimate Trevor's taxable income for each of the next two years (2022 and 2023) using the 2022 amounts for the standard deduction and also assuming Trevor makes the charitable contribution of $8,100 and state tax payments of $2,850 in each year. d. Trevor plans to purchase a residence next year, and he estimates that additional property taxes and residential interest will cost $2,100 and $11,500, respectively, each year. Assume that Trevor makes the charitable contribution for 2023 in December of 2022 . Estimate Trevor's taxable income for 2022 and 2023 using the 2022 amounts for the standard deduction. Reconcile the total taxable income to your solution to part (c). Complete this question by entering your answers in the tabs below. Estimate Trevor's taxable income for 2022 and 2023 using the 2022 amounts for the standard deduction for both years. Note: Amounts to be deducted should be indicated with a minus sign. Leave no field blank. Enter zero if applicable. Now assume that Trevor combines his anticipated charitable contributions for the next two years and makes the combined contribution in December of 2022. Estimate Trevor's taxable income for each of the next two years using the 2022 amounts for the standard deduction. Note: Amounts to be deducted should be indicated with a minus sign. Trevor plans to purchase a residence next year, and he estimates that additional property taxes and residential interest will cost $2,100 and $11,500, respectively, each year. Estimate Trevor's taxable income for each of the next two years (2022 and 2023) using the 2022 amounts for the standard deduction and also assuming Trevor makes the charitable contribution of $8,100 and state tax payments of $2,850 in each year. Note: Amounts to be deducted should be indicated with a minus sign. Trevor plans to purchase a residence next year, and he estimates that additional property taxes and residential interest will cost $2,100 and $11,500, respectively, each year. Assume that Trevor makes the charitable contribution for 2023 in December of 2022 . Estimate Trevor's taxable income for 2022 and 2023 using the 2022 amounts for the standard deduction. Reconcile the total taxable income to your solution to part (c). Note: Amounts to be deducted should be indicated with a minus sign. \begin{tabular}{|l} \hline Salary \\ \hline Itemized deductions \\ Standard deduction \\ Leater of itemized deductions over standard deduction \\ Greater of standard deduction over itemized deductions \\ Lesser of standard deduction over itemized deductions \\ \hline \end{tabular}