Assuming an interest rate of $4\mathrm{.}15\%,$ compute how much income you will have each month if you save $$583$ each month for the next $42$ years and then use the accumulated money to buy an annuity of equal monthly payments for U$+2$ years $($or$,$ equivalently, an annuity for life when you expect to live for U$+2$ more years$).$U$=11$