input: Write a python function to sum every third element in a list starting from the first element.
  assert evaluate_list([3, 8, 7, 4, 9, 2, 1, 6]) == 14
  assert evaluate_list([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == 10
  assert evaluate_list([0, 0, 0, 0, 0, 0, 0, 0, 0]) == 0
output: def evaluate_list(lst):
      return sum(lst[i] for i in range(0, len(lst), 3))