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:
['h', 'a', '1645', '2391', '759', '519', '3331', '2831', '3427', '9893', 'u', 'J', '7391', '8379', 'V']
answer:
40566


question:
['9903', 'H', '757', 'J', '6481', '9789', 'H', '3285', 'V', 'X', '5229', '7197']
answer:
42641


question:
['2955', '7773', 'l', 'j', 'e', 'i', 'Q', '6071', 'O', '9611', '4301', 'j']
answer:

30711