Applicare la formula: $\frac{a}{b}c$$=\frac{ca}{b}$, dove $a=5$, $b=2$, $c=\pi $, $a/b=\frac{5}{2}$ e $ca/b=\pi \left(\frac{5}{2}\right)$

Applicare la formula: $\frac{\frac{a}{b}}{c}$$=\frac{a}{bc}$, dove $a=\pi \cdot 5$, $b=2$, $c=2$, $a/b/c=\frac{\frac{\pi \cdot 5}{2}}{2}$ e $a/b=\frac{\pi \cdot 5}{2}$