And so this is going to be equal to 2 times s. Well, s is 1 mile, so it's just going to be 2 times ds dt, which is what we're trying to solve for. So what do we get here on the left-hand side? So 1.2 times negative 30, that's negative 36. 1 over 5 of 30 is 6. Yep, that's right. And then 1.6 times negative 60, that's going to be negative 96, is equal to 2 times ds dt, is equal to 2 times the rate at which our distance is changing with respect to time. On the left-hand side right over here, this is negative 132.