<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def calculate_delay(original, delay):
 """ Calculate the delay """

    original = datetime.strptime(original, '%H:%M')
    delayed = datetime.strptime(delay, '%H:%M')
    diff = delayed - original
    return diff.total_seconds() // 60