\(\frac{{96 \div 16\;of\;2 - 128 \times 2 \div 32 + 15~of\;4}}{{\frac{5}{6}of\;\frac{2}{3}\left( {\frac{1}{3} - \overline {\frac{1}{4} - \frac{1}{6}} } \right)}}\) :