### Perform the indicated operation(s) on the matrix.

\(\left[\begin{array}{rrr|r}-4 & 1 & 3 & 11 \\
5 & 5 & 5 & -15 \\
5 & 0 & -4 & -18\end{array}\right]\begin{array}{ll}\phantom{1} & -\frac{1}{4}R_1 \to R_1 \\
\phantom{1} & \\
\phantom{1} & \end{array}\)