How do you get the answer to 18,000 seconds = hrs?

You would divide 18,000 seconds by 60 seconds (which is equivalent to a minute)

the you would take the number you just got and divide that number by 60 minutes (which is equivalent to an hour)

that should give you the correct answer

First you'd convert the seconds into minutes by dividing.

18,000 / 60 (60 secs in a min) = 300 minutes

Then, similarly, you would convert the minutes into hours.

300 / 60 (60 mins in an hr) = 5 hours

The answer is 5 hours.