Evaluate:
\begin{aligned}
&\text { (i) }\\
&3^{3} \times(243)^{-\frac{2}{3}} \times 9^{\frac{1}{3}}
\end{aligned}
\begin{aligned}
&\text { (ii) }\\
&5^{-4} \times(125)^{5} \div(25)^{-\frac{1}{2}}
\end{aligned}
\begin{aligned}
&\text { (iii) }\\
&\left(\frac{27}{125}\right)^{\frac{2}{3}} \times\left(\frac{9}{25}\right)^{\frac{3}{2}}
\end{aligned}
\begin{aligned}
&\text { (iv) }\\
&7^{n} \times(25)^{-\frac{3}{2}}-5^{-3}
\end{aligned}
\begin{aligned}
&(\mathrm{v})\\
&\left(\frac{16}{81}\right)^{-\frac{3}{4}} \times\left(\frac{49}{9}\right)^{\frac{3}{2}}+\left(\frac{343}{216}\right)^{\frac{2}{3}}
\end{aligned}