A contractor wishes to set up a special fund by

making uniform semiannual end$-$of$-$period deposits

for $20$ years. The fund is to provide $$10,000$ at the

end of each of the last $5$ years of the $20-$year

period. If interest is $8\%,$ compounded semiannually,

what is the request semiannual deposit? $[4]$