def triple(value):
    '''Calculate three times the given number.'''
    return value * 3

def num_episodes(break_length):
    '''Count the number of Netflix episodes you can watch during a break.'''
    episode_minutes = 22
    walk_time = 5    
    return (break_length - walk_time) // episode_minutes

def distance(val1, val2):
    '''Compute the distance between two numbers.'''
    return abs(val1 - val2)

def average(num1, num2, num3):
    '''Compute the average of three numbers.'''
    total = num1 + num2 + num3
    return total / 3