\[= \left( 11^{\backslash 12} + \frac{16^{\backslash 4}}{3} - \frac{61^{\backslash 3}}{4} \right)\ :1\frac{5}{6} =\]
\[= \frac{132 + 64 - 183}{12}\ :\frac{11}{6} =\]
\[= \frac{13 \cdot 6}{12 \cdot 11} = \frac{13}{22}\]