def hhmmsstominutes(hhmmss):
time = list(map(int, hhmmss.split(':')))
return (time[0] * 60) + time[1] + (time[2] / 60)
print(hhmmsstominutes("2:30:00"))
print(hhmmsstominutes("2:35:30"))
print(hhmmsstominutes("5:00:45"))
'''
run:
150.0
155.5
300.75
'''