What's the problem in my code

Question

Here is my code:

fun main(args: Array<String>) {
var hours = readLine()!!.toInt()
var total: Double = 0.0
if (hours<=5){
println(hours)
}
else if (hours>5 && hours<24){
println(5+(hours-5)*.5)
}
else{
println(((hours-hours%24)/24)*15 + (hours%24)*.5)
}
}
.

Only one test failed number 4

Answer 1

M.A. Masud Karim Nayeem

Why hours - hours%24?

why not just (hours / 24) because we need exact hours

Answer 2

Cz that will be point value like 2.33 or something..we need full number