[tex]\\ \rm\hookrightarrow (3^8.2^{-5})^{-2}(2^{-2}3^{-3})^4.3^{28}[/tex]
[tex]\\ \rm\hookrightarrow 3^{-16}
.2^{-10}.2^{-8}.3^{-12}>3^{28}[/tex]
[tex]\\ \rm\hookrightarrow 3^{-16-12+28}2^{-10-8}[/tex]
[tex]\\ \rm\hookrightarrow 3^02^{-18}[/tex]
[tex]\\ \rm\hookrightarrow \dfrac{1}{2^{18}}[/tex]
