 Okay, so let's try this next one. It says the speed needed to escape the pool of Earth's gravity is 11.3 kilometers per second. What is this speed in miles per hour? Okay? Well, this one only, now it only gives us the conversion factor from miles to kilometers. One mile equals 1.6094 kilometers, it says. And it wants us to get to miles per hour. Well, how are we going to do that if we don't have a conversion factor from seconds to hours? Is that a conversion factor we're supposed to know? Yes. Yeah, so seconds to minutes? How many minutes, how many seconds are in one minute? 3600. What? Sixty. Sixty, okay, yes. I see you were trying to do it all at once, right? It's all right. Okay, and how many minutes are in one hour? Sixty. Yes, so in one hour, there are 60 minutes. So using these three conversion factors, we should be able to do this problem, right? Okay, wonderful. If you, what we were saying over here was if you times 60 times 60, right, that would give us the number of seconds in one hour, which would be 3600, okay? And you could just use that one. But we'll do it this way, just kind of to do it step by step, okay? It's not going to be fine, she did fine, I'm proud of her. Questions about the setup? Times 60, times 60, and then divide that by 1.6094, okay. So how many six-figs is this going to be to? Three. To three, okay? So this number is really big, so we got to make sure we put this into what? Scientific notation. Scientific notation, all right? So 2.53 times 10 to the 1, 2, 3, 4, right? 4, well let's cancel what we got. So kilometers, cancels with kilometers, miles, cancels with, oops, cancels with seconds, minutes, cancels with minutes, and we got miles per hour, all right? Any questions on that one?