Modulo is a very unused block but it can be very important for math equations. Basically it is the remainder of a division problem.
How it works
Modulo is set up like this:
___ % ___
This means ___ divided by ___. Modulo isn't the answer to a division problem, it is the remainder of the division problem. For example:
6 divided by 4 is 1, with a remainder of 2. So 2 would be the outcome of your Modulo.
It would look like this: 6 % 4
6 % 2
A lot of the time there is no remainder, so the outcome would be 0 because 6 divided by 2 is 3, with no remainder.
6 % 2 = 0