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.

Ex Input:
['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']

Ex Output:
12302


Ex Input:
['4437', '1265', '1519', 'K', 'Q', 'b', 'n', 'J', '6631', 'K', 'q', 'D', 'U', 'u', '3653', '5169', 'L', 's']

Ex Output:
22674


Ex Input:
['w', 'Y', '5383', '8951', 'U', 'd', 'R', 'Z', '965', 'v', '5747', 'c', 'w']

Ex Output:

21046