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:
['O', 'K', 's', 'V', '6815', 'c', '9277', 'V', '1783', 'b', 'i', '2045', 'E', 'E', '2035']

Ex Output:
21955


Ex Input:
['2225', '1925']

Ex Output:
4150


Ex Input:
['f', '9681']

Ex Output:

9681