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:
['2765', '6767', '7645']

Ex Output:
17177


Ex Input:
['O', 'd', '933', '2339', 'g', '7157']

Ex Output:

10429