Introduction
This lesson involves Maths
It's Maths you almost certainly know how to do.
It's not that hard.
And it might help.
IMPORTANT: I am not going to give you the answer to copy in this exercise. But I will help you to figure out what to do.
This will cause problems.
You probably won't get it all right the first time.
That's OK.
This is about solving puzzles, so you'll have to try different things out. Accept that from the start and do your best.