So this is going to be, and actually look at this, we're subtracting it twice and then we have one more. These are all the same thing. This is the expected value of Y times the expected value of X. This is the expected value of Y times the expected value of X, just written in a different order. And this is the expected value of Y times the expected value of X. We're subtracting it twice and then we're adding it. Or, one way to think about it is that this guy and that guy will cancel out.