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: ['6001', '6423', '5591', '8721', 't', 'x', '3723', 'E', 'F', '7353', 'b']

Output: 37812


Input: Consider Input: ['d', 'P', 'Z', '5335', 'O', 'v', '3639', '7367', '2957', '2457', 'W', 'p', '2979', '4689', '1291', '3683', 'K', '1399']


Output: 35796