as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
write a function that calculates the average of three numbers
user
def avg_3(num1, num2, num3): 
    return (num1 + num2 + num3)/3
assistant