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: ['i', 'C', '5373', '2017', 'm', '5435', 'Y', 'h']

Output: 12825


Input: Consider Input: ['K', '5815', 'E', 'c', '7379', '4995', 'w', 'B', 'j', '6227', 'B', '733', '1491', '3191', '9413', '2751', 'O', 'J', '6239', '3521']

Output: 51755


Input: Consider Input: ['2887', '3017', 'T', 'P', '7153', 'M', 'B', 'p', '6927', '8199', '335', 'E', 'O', 'Y', 'j']


Output: 28518