Math
posted by Jane .
Please explain in detail how to solve this:
During one year, about 163 million adults over 18 years old in the U. S. spent a total of about 93 billion hours online at home. On average, how many hours per day did each adult spend online at home? How do you write each number in scientific notation? How do you convert the units to hours per day?

Math 
Reiny
average per year = 93 billion hrs/163 million people
= (93billion/163million) hrs/person
= 570.55 hrs/person
1 year
= 365 days
so divide the above by 365 to get hrs per day/person
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