This way of multiplying to numbers dates thousands of years ago. It is sometimes called Egyptian or Ethiopian multiplication.
What is interesting is that it is not graphical, and doesn't use multiplication table.
After some practice, it can be quite fast.
After some comments, I need to add this:
This video is NOT going to show you a fast way to multiply.
The idea is just to show that there are alternate methods to the one everybody knows.
Don't tell me it's slow. I know it is
