The $6-$month, $12-$month, $18-$month and $24-$ month zero rates are $3\%,3\mathrm{.}2\%,3\mathrm{.}5\%$ and $3\mathrm{.}8$ with semiannual compounding. $(1)$ Whatare the rates with continuous compounding? $(2)$ What is the forward rate for the six$-$month period beginning in $18$ months? $(3)$ What is the value of an FRA that promises to pay you $3\%($compounded semiannually$)$ on a principal of $$5$ million for the six$-$month period starting in $18$ months?