input: Write a python function to sort a list of numbers.
  assert sort_list([4, 2, 9, 1, 5, 6]) == [1, 2, 4, 5, 6, 9]
  assert sort_list([10, 8, 12, 3, 7]) == [3, 7, 8, 10, 12]
  assert sort_list([5, 5, 5, 5]) == [5, 5, 5, 5]
output: def sort_list(numbers):
      return sorted(numbers)