So three times five, which gets us 15. And so our approximation of the area would be summing these three values up. So this would be 24 plus, let's see, nine plus 15 would give us another 24. So it's 24 plus 24, it gets us to 48. There you go. We, just using that table of values, we've been able to find an approximation. Now once again, we don't know how good of an approximation is, it depends on what the function is doing.