So 200 is equal to 100E, 100E to the K times 50, right? T is now 50. So we can, let me just write that, times K times 50. Now we can divide both sides by 100, and we will get two is equal to E to the 50K, E to the 50K. Then we can take the natural log of both sides, natural log on the left-hand side, we get the natural log of two. And on the right-hand side, the natural log of E to the 50K, well, that's just going to be, that's the power that you need to raise E to to get E to the 50K. Well, that's just going to be 50K.