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