How many seconds in 70 years?

1 day = 24 hours x 60 mins x 60 secs = 86,400 secs

1 year = 365.25 days = 365.25 x 86,400 = 31,557,600 secs

31,557,600 secs x 70 = 2,209,032,000 = 2.209032 x 109