\[- \frac{7}{8} \cdot \left( - \frac{4}{23} \right) \cdot \frac{9}{14} \cdot ( - 46) =\]
\[= - \frac{7 \cdot 4 \cdot 9 \cdot 46}{8 \cdot 23 \cdot 14 \cdot 1} = - \frac{9}{2} =\]
\[= - 4\frac{1}{2} = - 4,5\]