Applicare la formula: $\frac{a}{b}\frac{c}{f}$$=\frac{ac}{bf}$, dove $a=9$, $b=8^{\left(h^7\right)}$, $c=6$, $a/b=\frac{9}{8^{\left(h^7\right)}}$, $f=15^{\left(h^2\right)}$, $c/f=\frac{6}{15^{\left(h^2\right)}}$ e $a/bc/f=\frac{9}{8^{\left(h^7\right)}}\frac{6}{15^{\left(h^2\right)}}$

Applicare la formula: $ab$$=ab$, dove $ab=9\cdot 6$, $a=9$ e $b=6$