instruction:
In this task, you are given an input list A. You need to find all the elements of the list that are numbers and calculate their sum.
question:
['f', 'H', 'U', 'l', 'n', 'q', '2701', '339', 'X', 'H', 'O', 'q', '2313']
answer:
5353


question:
['6347', '5495', '169', '9503', 'H', '571', '6105', 'X', 'r', 'e', '7369', 'a', 'd', '6999']
answer:
42558


question:
['9109', 'h', 'E', '4711', '2789', 'b', '405', 'p', '2693', '9557', '5135']
answer:

34399