Simplify the following. $81^{\frac{3}{4}}+[(20 ÷ 5\, of\, 3 × 6) + {(8 ÷ 24\, of\, 3) × 4} − 10 ÷ 5] − (\frac{1}{32})^{-\frac{2}{5}}$

$24\frac{1}{4}$ $21\frac{1}{9}$ $27\frac{4}{5}$ $29\frac{4}{9}$

$29\frac{4}{9}$