statistics
posted by Grace on .
In 2005, about 233 million people in the United States were aged 14 or older. They consumed, on average, 2.23 gallons of alcohol per person. use scientific notation to estimate the total number of gallons of alcohol consumed by this age group.

Multiply 233*10^6 by 2.23 (gallons/person), and use scientific notation for the answer.
You can do this. I have already used scientific notation for the US population over 14.