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. And so if we have a number divided by some positive number plus Kcat plus itself, this will basically be a ratio that is less than one. Now, what is the maximum value of this ratio? Well, the maximum number of this ratio is basically reached when this value approaches zero.