Hector makes payments of $$2000\mathrm{.}00$ into an RRSP at the beginning of every six months starting today for $33$ years. If the interest rate is $8\%$ compounded semi$-$annually, calculate the accumulated value. a$$740155\mathrm{.}60$ b$$640155\mathrm{.}60$ c$$840155\mathrm{.}60$ d$$940155\mathrm{.}60$