So I'm going to write 20 sine of, and just because it's easier for me to input x than t, I'm going to use x, but if you just use this as sine of x squared over 35 dx, you're going to get the same value. So you're going to get x squared divided by 35, close that parenthesis, so that is my function there. Actually, I don't know if it's going to understand. Let me put the times, second insert times just to make sure it understands that. Okay, so that's my function, and then let me throw a comma here, make it clear that I'm integrating with respect to x. I could have put a t here and integrated with respect to t, we'd get the same value. Comma, my lower bound is zero, and my upper bound is eight, and close the parenthesis and then let the calculator munch on it a little bit. And we get 76.570, so this is approximately 76.570.