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:
['s', 't', 'W', '163', 'v']

Ex Output:
163


Ex Input:
['A', '1121', 'J', 'T', '2619', 'J', 'G', '9837']

Ex Output:

13577