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: ['A', '9785', '1739', 'x', '2389', 'O', 'J', '1407', '9067', 'x', '9747', '2485', '4631', '6021', '4077', '2779', 'V', '2449', '7401']

Output: 63977


Input: Consider Input: ['W', 'D', 'X', 'g', 'R', '1565', 'L', '5143', 'J', 'm', 'A', 'N', '8943']


Output: 15651