input: Write a python function to compute the average of a list of numbers.
  assert compute_average([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 5.5
  assert compute_average([10, 20, 30, 40, 50]) == 30
  assert compute_average([5, 15, 25]) == 15
output: def compute_average(numbers):
      return sum(numbers) / len(numbers)