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:
['b', '5689', '119', 'p', 'P', 'J', 'w', 'm', '7397', 'Y', '447', 'O', 'p', '319', 'H', 'U']

Ex Output:
13971


Ex Input:
['Q', '1669']

Ex Output:
1669


Ex Input:
['c', '4085', 'v']

Ex Output:

4085