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.

Example Input: ['5467', '3013', '8325', '4005', 'J', 'V', '395', '7477', 'E', 's', '1337', 'g', 'v', '8569', '9757', 'x', '3909', '2983', 's', '7917']
Example Output: 63154

Example Input: ['8147', '3191']
Example Output: 11338

Example Input: ['8993', 'X', 'J', '7033', 's', 'v']
Example Output:
16026