 OK, so let's just do this problem that I'm about to make up. So we know this convergent factor, 1 foot equals 12 inches. So let's just say, well, how many feet would something be if it were 52 inches long? So let's figure out how to do that. So what did we say? The length was 52 inches. And we want to know the length and feet. So we have this convergent factor. All we have to do is take 52 inches and multiply that by that conversion factor. But we want to divide out the inches and keep feet in there. So 1 foot equals 12 inches. Yeah, so we've got to put one over the other. And the way to do that is to put 1 foot on top and 12 inches on the bottom. When we do that, of course, this cancels out. Everybody OK with something numerator canceling with something in the denominator like that? And so we no longer have inches in this measurement, and only have the unit of feet. Is everybody OK with that? So now all we have to do is get our calculator to say 52 divided by 12. And I get an answer that says 4.333333. OK? If I let that answer, I would get it wrong, OK, because of significant figures. We'll talk about significant figures in a little bit. But for right now, just take my word for it that the number of significant figures in this is 2, OK? And so the answer would be 4.3, but you also have to put your units, OK? So if you just put 4.3, this would be incorrect, OK? Since the units that are left are feet, go ahead and write that down. So in other words, something that's 52 inches long is actually 4.3 feet. And you can think about that like you can think about checking that in your mind, right? You would imagine that the length in inches would be longer than the length in feet, and it is. So that's kind of a mental challenge that you've done, at least with the right way, OK? Is there any questions on something like this? This is effectively everything you're going to be doing in this class. Yeah? No, no, just round. We're going to talk about rounding, too, OK? So don't do that stuff. This is not math class. This is chemistry class, OK? Any other questions? OK, cool.