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:
['6565', 'T', 'O', '2901', '5121', 'y', '9617', 't', '7825']

Ex Output:
32029


Ex Input:
['3575', '8877', '3231', 'v', '9083', '317', 'M', '8975', 'x', 'F']

Ex Output:
34058


Ex Input:
['8329', '9641', 'b', 't', '549', 'V', 'M', '7167', 'a', '9833', '6239']

Ex Output:

41758