$1)$ A person who is $25$ years old expects to retire at $65$ and would like to have $1$ million dollars at his retirement account when he retires. How much should he save every $3$ months if the yearly interest rate is $12\%?$

$2)$ The person in question $1$ wants to receive $10\mathrm{.}000$$ every two months. How long does he expects tol ive after retirement $?$