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:
['9509', 'o', 'l', '9873', 'h', 'N', '2059', '8595', 'D', 'L', '5913', 'o', '1443', 'C', 'y', 'K', 'J', 'a', 'X', 'E']

Ex Output:
37392


Ex Input:
['m', '3481']

Ex Output:
3481


Ex Input:
['G', 'l', '2141', '2823', 'd', '9095', '1363', 'p', 'K', '5607', '4321', '8607']

Ex Output:

33957