How much should you invest each month in order to have $$600,000$ if your rate of return is $3\mathrm{.}3\%$ compounded monthly and you want to achieve your goal in $40$ years?

How much interest will you earn?

$

How much should you invest each month in order to have $$600,000$ if you want to achieve your goal in $20$ years?

If you deposit the amount you need to achieve your goal in $20$ years, how much will your savings be worth after $10$ years?