Use the Bankrate Retirement calculator to estimate your monthly after$-$tax income at age $65$ using the following inputs $($record both the before and after$-$inflation monthly after$-$tax income amounts for each part, A$-$E; you do not need to record any before$-$tax values$)$:

$$ Starting balance: $$10,000$

$$ Annual contributions: $$9,000$

$$ Current age: $25$ years

$$ Age of retirement: $65$ years

$$ Years of retirement: $25$

$$ Increase deposits with inflation: check yes

$$ Savings in tax$-$deferred: check yes

$$ Rate of return before retirement: $11\mathrm{.}0\%$

$$ Rate of return during retirement: $4\mathrm{.}5\%$

$$ Current tax rate: $24\mathrm{.}0\%$

$$ Retirement tax rate: $15\mathrm{.}0\%$

$$ Inflation rate $3\mathrm{.}5\%$

Note: You might have to expand the investment returns section to change the inputs.

B$.)$ What is your after$-$tax monthly income $($both before$/$after inflation$)$ if your annual contribution was lower at $$6,000($$$500$ per month$)?$ Keep all the other inputs the same as in part A$.$

C$.)$ What is your after$-$tax monthly income $($both before$/$after inflation$)$ if you don$$t place your savings in a tax deferred account? Keep all the other inputs the same as in part A$.$

D$.)$ What is your after$-$tax monthly income $($both before$/$after inflation$)$ if you start your retirement savings at age $30($instead of age $25)?$ Keep all the other inputs the same as in part A$.$

E$.)$ Using the inputs in part D $($starting age $30$ instead of age $25),$ except for the rate of return before retirement, approximately what rate or return before retirement you would need to produce an after$-$tax and after$-$inflation monthly retirement income of $$9,000($$$108,000/$year$)$ in today$$s dollars $($i$.$e$.,$ after inflation$)?$ Note: You will need to try a few return values for the rate of return before retirement to $$zero$-$in$$ on the after$-$tax and after$-$inflation $$9,000/$month target. You might also need to use$/$show more significance, such as $10\mathrm{.}00\%.$