So we need to solve:
[tex]\frac{v}{5}=-36[/tex]Since we have an equality we can multiply both sides of it by the same number without any problem. Then if we multiply both sides by 5 we get:
[tex]\begin{gathered} 5\cdot\frac{v}{5}=-36\cdot5 \\ v=-180 \end{gathered}[/tex]Then the answer is v=180.