input: Write a python function to remove duplicate numbers from a list and return the unique elements sorted.
  assert unique_sorted_list([50, 20, 30, 40, 10, 20, 30, 50, 40, 10])==[10, 20, 30, 40, 50]
  assert unique_sorted_list([5, 3, 2, 8, 3, 5, 9, 1])==[1, 2, 3, 5, 8, 9]
  assert unique_sorted_list([100, 100, 50, 50, 25, 25, 75, 75])==[25, 50, 75, 100]
output: def unique_sorted_list(numbers):
      return sorted(set(numbers))