Given that $\displaystyle 132=2^2 \times 3 \times 11$ and $\displaystyle 252=2^2 \times 3^2 \times 7$

Use these results to find:

the highest common factor of $\displaystyle 132$ and $\displaystyle 252$,

the smallest interger $\displaystyle k$ such that $\displaystyle 132k$ is a multiple of $\displaystyle 252$