Challenge · Medium problem

Let $\mathbf{u}=\langle 5,10\rangle$ and $\mathbf{v}=\langle 3,4\rangle$. Find the scalar projection of $\mathbf{u}$ onto $\mathbf{v}$, that is, $\dfrac{\mathbf{u}\cdot\mathbf{v}}{|\mathbf{v}|}$.