Question

give a proper fraction I sleep 8 hours of a day what fraction of the day I sleep

Answer 1

You have slept 8/24 = 1/3rd day

Answer 2

a day consists of 24 hours.
and if u sleep for 8 hours a day and want to know what fraction of a day you sleep, simply do this:
8/24
since you can furthur simply this, we get:
1/3
so you sleep one third of the day