One light-year is the distance light travels in a 365-day year. The speed of light is about 186,282.4 miles per second. How long is a 2 light-year period (in miles). Express your answer in scientific notation.
1 mile = 5280 feet
1 hour = 60 minutes = 3600 seconds
1 day = 24 hours * 3600 seconds = 86,400 seconds
Then 86,400 seconds * 365 days = 31,536,000 seconds
I don't know how to use this information to answer the math question.