If there is a box that is represented by one unit of measurement, it being cut into 10 pieces won't affect the amount of stuff you have. Let's look at it like having sandwiches. on one side, you have two square sandwiches, completely full with no cuts or divisions. On the other side, you also have 2 sandwiches, but cut into 20 slices, 10 each. You're still eating the same amount of sandwich on both sides,
ALT EXPLANATION
2/1
20/10
Take away the 0s in the second one and what do you get?
2/1.