Let me do this in a new color. I'll do it in the orange. This is going to be equal to, this is what? 30 minus 20 is 10 squared, which is 100 divided by 20, which is 5. I might not be able to do all of them in my head like this. Plus, actually let me just write it this way, just so you see what I'm doing. This is going to be 100, this right here is 100 over 20.