text: def divide_by_four(input_number):
    return input_number/4
    
  result = divide_by_four(16)
  # result now holds 4
  print("16 divided by 4 is " + str(result) + "!")
  result2 = divide_by_four(result)
  print(str(result) + " divided by 4 is " + str(result2) + "!")
  
  
  def calculate_age(current_year, birth_year):
    age = current_year - birth_year
    return age
    
  my_age = calculate_age(2049, 1993)
  dads_age = calculate_age(2049, 1953)
  
  
  print("I am "+str(my_age)+" years old and my dad is "+str(dads_age)+" years old")