(ii) $$ \left(\frac{256 a^{16}}{81 b^{4}}\right)^{\frac{-3}{4}} $$

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Calculate or simplify the expression $$ (256a^{16}/81b^{4})^{-3/4} $$.
Simplify the expression by following steps:
- step0: Solution:
  $$\left(\frac{256a^{16}}{81b^{4}}\right)^{\frac{-3}{4}}$$
- step1: Rewrite the fraction:
  $$\left(\frac{256a^{16}}{81b^{4}}\right)^{-\frac{3}{4}}$$
- step2: Transform the expression:
  $$\left(\frac{81b^{4}}{256a^{16}}\right)^{\frac{3}{4}}$$
- step3: Rewrite the expression:
  $$\frac{\left(81b^{4}\right)^{\frac{3}{4}}}{\left(256a^{16}\right)^{\frac{3}{4}}}$$
- step4: Evaluate the power:
  $$\frac{27b^{3}}{64a^{12}}$$
The simplified form of $$ \left(\frac{256 a^{16}}{81 b^{4}}\right)^{\frac{-3}{4}} $$ is $$ \frac{27b^{3}}{64a^{12}} $$.
The simplified form is $$ \frac{27b^{3}}{64a^{12}} $$.

(ii)

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