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: ['L', 'i', '9225', 'w', '5365', '8077', '2733', 'W', '8493', 'B']

Output: 33893


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

Output: 20648


Input: Consider Input: ['E', '8541', '5317', '7685', '8533', 's', 'L']


Output: 30076