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:
['J', '5149', 'H', 'L', 'm', 'h', '3863', 'n', 'z']

Ex Output:
9012


Ex Input:
['W', '3561', '4631', '8379', 'W', '6857', '2723', '5393', 'h', 'g', 't', 'I', 'R', '2321', 'l']

Ex Output:
33865


Ex Input:
['9167', '9905', '3309']

Ex Output:

22381