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.

Input: Consider Input: ['8809', '4559', '2715', 'w', '9903', 'h', 'u', 'F', '9369', '6149']

Output: 41504

Input: Consider Input: ['29', 'N', '5061', '7191', 'z', '8367']

Output: 20648

Input: Consider Input: ['2401', 'M', 'T', '3691', '3637', 'I', 'X', '1025', '3571', 'o', 'K', 'T', '1399', '9745']
Output: 25469