Financial Math,

question One : Ryan purchased an annuity that had an interest rate of $2\mathrm{.}75\%$ compounded semi$-$annually. It provided her with payments of $$2,000$ at the end of every month for $6$ years. If the first withdrawal is to be made in $4$ years and $1$ month, how much did she pay for it$?$

question two: Allison invested her savings in a bank at $4\mathrm{.}25\%$ compounded quarterly. How much money did she invest to enable withdrawals of $$3,500$ at the beginning of every $6$ months from the investment for $6$ years, if the first withdrawal is to be made in $12$ years?