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:
['l', '5369', 'z', 'U', 's', '2357', '3367', 't', '6539', 'K', 'a', 'Q', 'x', 'e', '6459', 'K', 'B', 'f', 'j']

Ex Output:
24091


Ex Input:
['Y', '263', '641', '1163', 'p', 'r', 'L', '4425', 'C', '7585']

Ex Output:
14077


Ex Input:
['B', 'q', '8743', '7311', 'K', 'O', 'q', '1357', '239']

Ex Output:

17650