Transcription: In this example, we're converting 14,351 grams into kilograms. Now how are we going to do that? In this class, we do our conversions by the factor label method. In the factor label method, we take the number we have, 14,351 grams, and we put it over one in order to make it into a fraction. You can take any number and convert it to a fraction by just putting it over one. So that's what we're going to do here. So now we have the fraction 14,351 grams over 1. Now in order to convert the units, what we're going to do is multiply by something. But the only thing we can multiply by is 1. Why? Well, ...