$\frac{$9^{4}$. $4^{5}$. $25^{3}$ }{$8^{3}$. $27^{2}$ $5^{7}$ }$
= $\frac{$3^{4}$. $3^{4}$. $4^{5}$. $5^{3}$. $5^{3}$ }{$2^{3}$. $4^{3}$. $3^{6}$. $5^{7}$ }$
= $\frac{$3^{4}$. $4^{2}$. $5^{3}$ }{$2^{3}$. $3^{2}$. $5^{4}$ }$
= $\frac{3².4²}{2³.5}$
= $\frac{3².$2^{4}$ }{2³.5}$
= $\frac{3².2}{5}$
= $\frac{18}{5}$
~CHÚC BẠN HỌC TỐT~