Determine the accumulated value of semi$-$annual deposits of $$77$ each after $10$ years if the deposits earned $7\mathrm{.}7\%$ per annum compounded semi$-$annually for the first $4$ years and $6\mathrm{.}4\%$ per year compounded semi$-$annually thereafter. Assume the deposits are made at the end of each half$-$year.

$($Enter the value only; do NOT add a $ sign.$)$

Answer: