Problem:
Multiply the scalar $-\frac{7}{2}$ and the matrix
$\left(
\begin{array}{cc}
 2 & 3 \\
 5 & 0 \\
 -5 & 1 \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{cc}
 -7 & -\frac{21}{2} \\
 -\frac{35}{2} & 0 \\
 \frac{35}{2} & -\frac{7}{2} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/multiply_by_scalar/37911.txt'}