milliseconds = x
total = 0
while (milliseconds >= 1000) {
milliseconds = (milliseconds - 1000)
total = total + 1
}
hr = 0
min = 0
while (total >= 60) {
total = total - 60
min = min + 1
if (min >= 60) hr = hr + 1
if (min == 60) min = 0
}
sec = total
This is on groovy, but I thing that this is not problem for you. Method work perfect.