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:
['597', 'i', 'd', '3201', 'u', '1111', '8563', 'c', 'E', '5983', '6293']

Ex Output:
25748


Ex Input:
['3469', 'n', '5561', '8597', '921', '4737', 'r', 'P', '7127', '3651', 'D', '1703', 'y']

Ex Output:
35766


Ex Input:
['U', 'F', 'E', '7589', 'b', '6829', '9167', 'N', '1503', 'H', 'r', 'r', '2905']

Ex Output:

27993