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:
['w', '8035', 'J', '2671', '7509', '1573', '6915', '8569', '345', 'T', 'P', 's', '1341', '7823', '8671', 'm', 'Q', 's', 'N']

Ex Output:
53452


Ex Input:
['5199', 'h', 'T', 'T', 'l', '1661', 'p']

Ex Output:
6860


Ex Input:
['d', 'P', 'g', 'f', '2687', '2147', '8527', 'H', 'G', 'H', '969']

Ex Output:

14330