
    Given a list of delivery time durations (in minutes) for each route in your fleet, calculate the efficiency metric by multiplying all route durations together and dividing by the total number of routes. This metric helps identify extreme variations in route performance that could indicate scheduling inefficiencies or bottlenecks in the delivery network.
    

    
def multiply_num(numbers):
    """
    Given a list of delivery time durations (in minutes) for each route in your fleet, calculate the efficiency metric by multiplying all route durations together and dividing by the total number of routes. This metric helps identify extreme variations in route performance that could indicate scheduling inefficiencies or bottlenecks in the delivery network.
    

    """
def multiply_num(numbers):
    """
    Given a list of delivery time durations (in minutes) for each route in your fleet, calculate the efficiency metric by multiplying all route durations together and dividing by the total number of routes. This metric helps identify extreme variations in route performance that could indicate scheduling inefficiencies or bottlenecks in the delivery network.
    

    """
    total = 1
    for x in numbers:
        total *= x
    return total / len(numbers)