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:
['2225', '1925']

Ex Output:
4150


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

Ex Output:
163


Ex Input:
['8031', 's', 'q', '6457', 'Y', '7705', '2283', '1687', '5715', 'f', '1481']

Ex Output:

33359