 All right, so where does division fit into the order of operations? Well, again, the fundamental rule of order of operations, all operations go from left to right unless there's a grouping symbol or we have an operation with higher precedence. Again, addition and subtraction have equal precedence, neither is done before the other. The default left to right then applies. Division has a higher precedence, so it gets done before addition and subtraction. Division and multiplication also have the same precedence. So if I have a division and I have a multiplication, I don't have higher precedence, and if I don't have a grouping symbol, my default left to right procedure is going to be what holds. So, for example, let's try and place parentheses to make this statement that involves division, multiplication, addition, and subtraction. We want to make that true. And again, identify the type of expression. The last thing we do is going to be the type of expression that we have. So again, maybe there are no parentheses, so let's evaluate that. So let's see I have division, I have multiplication. So if there are no parentheses, I do those things first and from left to right, so the division is first, that's six, then my multiplication, one times four, that's four. I have addition and subtraction. I'm going to do those left to right, so I do four plus six first, then I subtract, I get six, which is not what I want. So the statement isn't true, so I need to throw in some parentheses. And I'll try out various combinations. So maybe the four plus 12 is in parentheses, so parentheses take highest priority, stuff inside parentheses gets done first. I have division and multiplication. They're equi-precedents, so I'm going to take care of those left to right and still not true. So where else can I place parentheses? Well, maybe I'll throw them around the two minus one. So again, parentheses do this first, and so parentheses two minus one is one, and here I have multiplication and division. They have equal precedents, so I'm going to work these from left to right. I do divide by one, then times four. Divide by one, times four. Finally, I add, and still not what I want. Well, let's say two sets of parentheses, four plus 12, divide by two minus one times four. So I'll try it out. Four plus 12, parentheses say do things first. That's 16, that's one. And again, division followed by multiplication. They have equal precedents, so I'm going to go from left to right. And still not what I want. Well, here's another possibility we haven't tried before. Maybe our parentheses are inside parentheses. So here's what we call nested parentheses, and that is certainly a possibility. So reading this, parentheses say do stuff inside first. Well, inside there's another set of parentheses, so do stuff inside first. So that two minus one has to be done first, then times four is inside parentheses, so I have to do that first, and then divide and plus divide has higher precedents. Four plus three is seven, and that finally works. And again, the last thing I did was add, so this expression is a sum.