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:
['8353', 'f', '1799', '6985', '2975', 'J', '9105', 'f', 'v', 'C', 'V', '9327', '3015', 'e', 'h', '439', '4969', 'c']

Ex Output:
46967


Ex Input:
['2039', '1679', '9675', 'S', 'J', '2069', 'r', 'e']

Ex Output:
15462


Ex Input:
['H', '8857', 'p', '4073', '9175', 'w', 'w', 'n', 'i', '1257', 't', '3387', '4427', 'C', 'j', '6945', '7045']

Ex Output:

45166