 Okay, so let's do this next example. This is solving multiple functions to the correct number of sig figs example. So in A, it's pretty straightforward. I'm doing this by stepwise. So in the parentheses, you're to solve that first and you see that subtraction sig fig rules. So you got to go to the least number of significant figures after the decimal, which is one. So that's why we have 33.5. And then when we divide that by 0.0087, we got to use the division sig fig rules. So we go to two significant figures. So it's 3.9 times 10 cubed. Okay, hopefully that makes sense. B, same sort of strategy. You solve what's in the parentheses first to the multiplication sig fig rules. So 5.38 has three sig figs. That's what the answer is going to have. So 186, and we add that to 445.56. And we have to use addition sig fig rules in that sort of problem. So we go to the number with the least digits after the decimal place, which is 0, 186 has zero digits after the decimal place. So that's why we cut it off at 632, no digits after the decimal place. Okay, part C is probably the most convoluted one. So you again solve what's in the parentheses first. That's division. So you got to do it to the division rules. So the first of those two numbers has only three significant digits. So the answer's to have three significant digits as well. So you get 8.89 times 10 to the fourth. What I would recommend you do now is convert the 356.99 to 10 to the fourth as well, which is what I've done. And then you can see how I've added them up, reminding myself where to cut the decimal point off it. So if I equate them to the same power, then I can do this type of analysis. It makes my life a lot easier. So when I go ahead and add those two numbers together, I get, of course, 8.93, a bunch of other numbers, but I cut it off there, times 10 to the fourth. Okay, hopefully that one made sense. And then lastly, same strategy, you do what's in the parentheses first, 8.92 divided by 986.7. That's going to give you a number to three sig figs, 0.904. You add that to 5.44, and you're going to cut that off at the second decimal because of the 5.44 giving you 6.34. Okay, let me know if you need any help with this one.