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:
['u', 'i', 'z', 't', '9617', 'd', '3255', 'w', 'S', '3041', '7451']

Ex Output:
23364


Ex Input:
['773', 'e', '4451', 'S', 'I', 'r', 'e', 'V', 'Q', 'g', 'J', 'L', '7655', 'O']

Ex Output:
12879


Ex Input:
['9489', '6085', '6051', '2493', '4801', 'd', '1453', '681']

Ex Output:

31053