Question

how do you turn 565,900 seconds into days

Answer 1

In what programming language and what did you try?

Answer 2

a minute has 60 seconds, so divide by 60 to get minutes
an hour has 60 minutes, so divide again by 60 to get hours
a day has 24 hours, so divide again now by 24 to get days
Or divide the seconds (your 565,900 seconds) by 86400,
since 60*60*24=86400
\[{ 565900s \over 86400s/d }=... d\]