We could figure out the total number of people. So 10%, actually let me write it this way. So 10%, 10% of the total, 10% of total is going to be equal to 17, or that the total, just divide both sides by 10%, is equal to 17 divided by 10%, which is the same thing as 17 over 0.1, which of course is equal to 170. So the total is 170, and they tell us that extreme, extreme computer users represent, extreme computer users who sleep five to seven hours per night represent 11.7%, 11.7% of the total. So to answer their question of how many people are extreme computer users who sleep five to seven hours per night, that's 11.7% of 170. So let's go back over here. So we actually have a little calculator tool here.