We get g of four, which is this area, essentially minus this area, 4.5 minus eight is going to be, let's see, four minus eight is negative four, add a.5, that's negative 3.5. Now let's try to figure out what g of eight is. So g of eight. And if you couldn't figure it out the first time around, try to pause the video again, and now that we've figured out g of four, try to figure out what g of eight is. Well g of eight is, one way to think about it, it's going to be that minus that area, and then we're going to add, and then we're going to figure out the area, and then we're going to have two more areas to think about. We're going to go all the way to eight, so actually let me draw the line there. So we're going to have to think about, we're going to think about this whole area now, this whole area now, and then we're going to think about this one.