 Okay, so this is one of the significant figure calculation problems, so it says calculate the answer to the correct number of significant figures. So whenever you're doing these problems, it wants you to do them in the correct order of operation. So once you, so with this parenthesis, you've got to do what's the operation within that parenthesis first, okay? Then you do what's within this parenthesis, okay? And then you're going to have those two numbers together. So you're going to have to do the significant figure rules for addition, subtraction here, significant figure rules for multiplication and division here, and then only combine those two numbers, addition and subtraction, significant figure rules, okay? So let's do this part. So 341 minus 22, 341.7 minus 202. Of course, this would have been to 1 after the decimal place, but when we look at the calculator, it gives us that, 3.19, 319.7, say. And then here, multiplication rules tells us we go to the least amount of significant digits, okay? So 0.00224 times 814, and that gives us, so the three sig figs, it's going to be 1820, like that, okay? What would have happened if we put 1823 on it instead of 1820? That would have been four significant figures, okay? Would you put 1820? Huh? Would you put 1820? Because that's the three significant figures, okay? So, again, you've got to use the significant figure rules for multiplication in this one, okay? So whenever we don't have a decimal point there, that trailing zero is not significant, okay? So let's add these two numbers together now so we can effectively be like this. Sometimes it's easier to put these to the same scientific notation decimal place to see where you actually are, okay? So if you want to, you could be like 1, 2, 3, so that would be 1.82 times 10 to the third, okay? Is that all right? And we can add that to 1, 2, 3, right? So that would be 0.3197 times 10 to the third. Is that okay? Does that make sense? So when we do that, 0.3197 10 to the third times 10 to the third, like that, right? It really shows us where we're going to cut it off like that, okay? So let's, and then here to the 3, 1, 2, 3, I get 2.14 essentially because it's going to be, I guess we'll write it out. So 2.1397 times 10 to the third, okay? But if we're cutting it off there, it's going to be 2.14 times 10 to the third. Does that make sense? So are there any more questions on that one? So again, you're going to have to do the significant figure rules within those orders of operation, okay?