Cross Product

Homework Statement

For the general case. I need help finding the cross product for the angular momentum. Say you have a particle at a position r= xi+yj+zk with a velocity of xi+yj+zk and a known mass. How do you find the angular momentum?

L=mvr

The Attempt at a Solution

So I know how to find the cross product of r and v. It will be some xi+yj+zk. Then how do you find the angular momentum from there?

Since angular momentum is $L = \vec{r} \times m\vec{v}$ and you know how to find $\vec{r} \times \vec{v}$ just multiply by m