And now if we replace Km with this ratio and rearrange a little bit, this is what we get. So k one divided by k minus one plus Kcat, and the whole thing is multiplied by Kcat. Now let's bring the Kcat to this side and take out the k one, so that we get the following rearranged version of this same ratio. So KCAD divided by Km is equal to KCAD divided by k one plus Kcat, and the whole thing is multiplied by k one. Now notice what this ratio is. The ratio is some number given by Kcat divided by that same number, kcat plus some positive number.