$(10$ points$)$ Eliminate all $-$productions, unit productions, and useless productions from the followin; grammar. $($show all your work$)$

$Sa|aA|\frac{B}{C}$

$AaB|||$

$BAa$

$CCD$

$Dddd|Cd||$

$(13$ poins$)$ Convert the following grammar to Chomsky NF $($show all your work$)$

$Sa|aA|\frac{B}{C}$

$AaB|||$

$BAa$

$CCD$

$D$dddICd