The example below calculates how long it would take to run a mile at 12kph...
mile_in_km = 1.609344
speed_kph = 12
time_hours = mile_in_km / speed_kph
time_minutes = time_hours * 60
minutes = int(time_minutes)
seconds = (time_minutes - minutes) * 60
print(f"{mile_in_km=}")
print(f"{time_hours=}")
print(f"{time_minutes=}")
print(f"{minutes=}")
print(f"{seconds=}")
mile_in_km=1.609344
time_hours=0.134112
time_minutes=8.04672
minutes=8
seconds=2.8032000000000323