Help with Kotlin Parking Fee project

Question

so ive been trying to make this work for a while and currently i want to die, i dont know whats goin wrong since the only test cases its failing is hidden also the code is ridiculously bad ik pls help

fun main(args: Array<String>) {
var hours = readLine()!!.toInt()
var amountDue = 0.0

if (hours <= 5) {
amountDue = hours * 1.0
} else {
amountDue = 5 * 1.0
var remainingHours = hours - 5
amountDue += remainingHours * 0.5
}

var numDays = hours / 24
var fullDays = numDays.toInt()
amountDue += fullDays * 0.5

println(amountDue)
}

Answer 1

if(hours <= 5){
amountDue = hours * 1.0
} else if (hours > 5 && hours < 24){
amountDue = ((hours-5.0)*0.5)+5.0
} else {
amountDue= (15.0 * Math.floor(hours /24.0)) + ((hours% 24.0)*0.5)
}