And so you do it numerically. And you don't have to feel bad about doing it numerically, because, oh, how do I take the integral of this? There's actually functions for it. And you can even approximate it. I mean, one way you could approximate it is you could use it the way you approximate integrals in general, where you could say, well, what is the area of this? What's roughly the area of this trapezoid? So you could figure out the area of that trapezoid, taking the average of that point and that point and multiplying it by the base.