Question

16 years = ? seconds

Answer 1

60 seconds in one minute
60 minutes in one hour
24 hours in one day
365 days in one year (for 3 of 4 years)
366 days in one year (for 1 of 4 years)

Multiply.
Hint: multiply 12 years times 365 and 4 years by 366.

If you post your answer, we'll be glad to check it for you.

Answer 2

or you can check it on google, put this in your search window:
16 years in seconds