$2\mathrm{.}1$ Converting between Binary to Decimal: Intermediate

$4$ pts Convert the following base$-2($binary$)$ representations of numbers exactly into base$-10($decimal$)$:

$($a$)(101011010\mathrm{.}110001)$ "fixed$-$point" binary number $-$ many bits to the left & right of the

$."$

$($b$)(1\mathrm{.}01101)$