How do you multiply ((2, 3, -1), (-1, 0, 5)) with ((1, 0, 2), (1, 2, 1), (3, 5, 3))?

The first matrix lets call it $A = \left(\begin{matrix}2 & 3 & - 1 \\ - 1 & 0 & 5\end{matrix}\right)$ is a 2 row by 3 column matrix and the second $B = \left(\begin{matrix}1 & 0 & 2 \\ 1 & 2 & 1 \\ 3 & 5 & 3\end{matrix}\right)$ is a 3 row by 3 column matrix.
Their product will be 2 rows by 3 columns matrix $C$.
$C = A \cdot B = \left(\begin{matrix}2 & 1 & 4 \\ 14 & 25 & 13\end{matrix}\right)$