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: ['2625', '1611', 'E', '4507', '3013', '1569', 'M', '2607', '1111', 'W']

Output: 17043


Input: Consider Input: ['m', '3481']

Output: 3481


Input: Consider Input: ['2507', 'A', 'a', '5553', 'K', '5551', '3535']


Output: 17146