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:
['1001', 'T', 'w', 'f', 'Q', '4035', 'b', 'q', 'x', 'R']

Ex Output:
5036


Ex Input:
['j', 'f', '3831', 'B', 'D']

Ex Output:
3831


Ex Input:
['7125', '7489', 'y', 'L', 'z', '5677', 'V', 'O', '9773', 'W', '9673', 'V']

Ex Output:

39737