How many seconds old is someone who is 80 years old?

Answer 1

On the day of his 80th birthday, at the same exact moment of the day when he took his
first unassisted breath outside of his mother, his age would be

(80 years) x (365.23 days/year) x (86,400 seconds/day)

= (80 x 365.23 x 86,400) (year - day - second / year - day)

= 2,524,469,760 seconds.

But then, 1 second later, this number would be wrong.