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: ['V', '8137', 'b', 'k', '2081', 'L', '9733', '7525', 'D', '2381', 'O']

Output: 29857


Input: Consider Input: ['3655', '1349', '6519', '1019', 'v', '4811', '8609', '9147', '8225', '2665', '2627', '5839']

Output: 54465


Input: Consider Input: ['d', 'x', 'Z', '3961', '791', '3281', '9451', 'J', '4989', '2263']


Output: 24736