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:
['x', '1305', 'b', '8193']

Ex Output:
9498


Ex Input:
['8755', 'A', '2893', '6703']

Ex Output:
18351


Ex Input:
['6723', '7077', 'Y', '5035', 'q', 'J', '7521', 'n', '7325', 'i', 'n', '3983', '599']

Ex Output:

38263