input: Write a python function to sort numbers in descending order.
  assert sort_numbers([1, 9, 4, 6, 3, 7]) == [9, 7, 6, 4, 3, 1]
  assert sort_numbers([10, 20, 5, 25, 15]) == [25, 20, 15, 10, 5]
  assert sort_numbers([3, 3, 3, 3, 3]) == [3, 3, 3, 3, 3]
output: def sort_numbers(numbers):
      return sorted(numbers, reverse=True)