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:
['D', 'K', 'n', 'd', 'i', 'U']

Ex Output:
0


Ex Input:
['q', '4203', 'U', 'B', '39', '6849', '5715', '8485', '4285', '749', 'h']

Ex Output:

30325