\[\frac{8}{9} \cdot \left( - 3\frac{9}{16} \right) - 4\frac{5}{6} \cdot \left( - \frac{7}{58} \right) =\]
\[= - \frac{8 \cdot 57}{9 \cdot 16} + \frac{29 \cdot 7}{6 \cdot 58} =\]
\[= - \frac{19}{6} + \frac{7}{12} =\]
\[= - \left( \frac{38}{12} - \frac{7}{12} \right) = - \frac{31}{12} = - 2\frac{7}{12}\]