Well, to answer this question, let's actually define what KCAD divided by Km means in equation form. So remember from this discussion that Km is equal to k minus one plus KCAD divided by k one. So we have KCAD divided by Km. 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.