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: ['3655', '1349', '6519', '1019', 'v', '4811', '8609', '9147', '8225', '2665', '2627', '5839']
Example Output: 54465

Example Input: ['1693', '9237', '7591', '1593', 'R', '6295', '9379']
Example Output: 35788

Example Input: ['5091', '2037', '5107', '8963', '2025', '7447', '8237', '1989', 'm', '5745']
Example Output:
46641