And so if we add up the areas of all these trapezoids, we have a pretty good approximation for the definite integral. I'll just use the calculator for this part right over here. So we have 126 plus 168 plus 192 plus 43.5 gives us 529.5. So this is equal to 529.5. And so that's our approximation for the definite integral part, but then we also have to divide it by 10, or we have to multiply it times 1 tenth. So we've evaluated, so this part right over here, we got 529.5 as our approximation. It's not going to be exact, but using the trapezoidal sum, the sum of the areas of these trapezoids, and now we have to multiply it by 1 tenth.