 Okay. So let's try a significant figure rule problem using multiplication or division. So this one's of course division, right? So everybody knows that this sign here, even when it's all on the same line, means division, okay? So another way that you can write this and probably the way you want to start writing this in chemistry class is one over the other, okay? So this is how they write it in like the textbook or like if I was going to text message, you know, a problem to you, I would write it like this because it's much more convenient to write on one line. But when we're working it out, it helps us out visually to kind of expand this, okay? So let's do that. So 103.37 grams divided by 20.5 milliliters. So what were the significant figure rules when we're doing division? Go to the what? Least amount of significant figures. So how many does this one have? Five. And this one? Three. Three. So this answer is going to go to three. Okay. And what are the units of this answer going to be? Can somebody tell me that? Grams per milliliter. Grams per milliliter, we say, okay? Grams per milliliter, okay? Why? Because grams divided by milliliters, they don't cancel each other out, right? You'd have to have milliliters on the top or grams on the bottom to have those units cancel out. So grams divided by milliliters gives us a new what we call derived unit, okay? So I'm going to write that down. Grams per milliliter. Okay, and this is going to go to three. So let's get our calculator down and say 103.37 divided by 20.5. And I see my answer says 5.042439024. Okay, am I going to put all those numbers on there? No way. Okay. If I do that, remember that's incorrect, okay? So we've got to go to three sig figs in round. So I'm going to show you what the calculator says. So 5.0424. Okay, so we're going to three sig figs. So what's my answer going to be? 5.04. 5.04. Okay, so 5.04 grams per milliliter. And I like to box in my answer just to show my instructor that is definitely what my answer is, okay? So remember this rounding rule is because this is a two, you're going to round, you're going to keep this at four. Okay, so round that thing. That's that same one. Any questions on this one? Grams per milliliter.