Simplify $\frac{c}{2}\times\frac{d}{4}$c2×d4.
Simplify the following:
$\frac{c}{p}\times\frac{f}{v}$cp×fv
$\frac{1}{r}\times\frac{1}{m}$1r×1m
$\frac{7x}{6}\times\frac{5y}{2}$7x6×5y2