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:
['4509', '4165', '8651', '8057', 'a', '2241', 't', 'i', 'q', 'S', '5149', 'J', 'j', '1373', 'W', 'X', '235', 'm', '3225']

Ex Output:
37605


Ex Input:
['901', '1939', '7637', '8863', 'X', '5003', '8791', '4757', 'E', '1525', 'y', '9735']

Ex Output:
49151


Ex Input:
['5459', 'K', 'w', 'I']

Ex Output:

5459