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', 'V', 'g', '5469', 'c', '7873', 'T', 'p', '8109', '5395', 'h', 'z', 'T', '9373']

Ex Output:
36219


Ex Input:
['83', 'k', 'p', 'o', 'b', '7819', '2089', '4141', 'c', 's', '6045', '6783', 'J', 'B', 'x', 'O', 'X', '9693']

Ex Output:
36653


Ex Input:
['w', 'W', 'I', 'f', 'f', '7841', '3651', 'r', '3287', 'v', '1107', 'V', '5245', 'M', 'j', 'T', 'W', 'W', 'g', 't']

Ex Output:

21131