But what we can do is divide this area into 4 sections. They tell us to use this, 4 subintervals. And we'll essentially divide it into 4 trapezoids. So this is one trapezoid right over here. So this is one trapezoid right over there. That's my first trapezoid from 0 to 2 on the base. And you see on the left end of that trapezoid its height is 66.