 Okay, so this first problem we're recording is how to record an individual lab grade. And the thing is, is this is just like how to calculate the average atomic mass of something, okay? So the pre-lab is worth 25% of your grade, and the experiment itself is worth 75% of your grade. And remember, each one of these is worth overall 24 total points, okay? So all of my pre-lab there were 24, and all of my experiments there were 24. I think I'd label this as experiment and the actual grade. So, in fact, let's just change that. So, how do I do this? Well, the first thing I had to do is calculate the percentage of this that I have, okay? So, 19 divided by 24 times 100% is going to be 79.2. And then, of course, 24 out of 24 is 100.0. So, now what do I do to calculate the lab grade? So the grade is going to be 79.2 times 0.25 plus 100.0 times 0.75, 24.8% on that individual lab, okay? So that's how you calculate an individual lab. Does anybody have a question about doing that?