Compute the orthogonal projection of $\vec{v}= \left[\begin{array}{c} 6\cr 9\cr 1 \end{array}\right]$ onto the line $L$ through $\left[\begin{array}{c} -4\cr 2\cr -5 \end{array}\right]$ and the origin.

${\rm proj}_L(\vec{v})=$ $\left[\Rule{0pt}{3.6em}{0pt}\right.$$\left]\Rule{0pt}{3.6em}{0pt}\right.$.