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:
['g', 'A', 'm', '4005', '8079', 'G']

Ex Output:
12084


Ex Input:
['8809', '4559', '2715', 'w', '9903', 'h', 'u', 'F', '9369', '6149']

Ex Output:
41504


Ex Input:
['3797', '3607', 'w', '9619', 'O', '8691', '8069', '7509', 'A', 'j']

Ex Output:

41292