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: ['C', '9973', 'b', '693', 'y', 'H', 'C', 'P', 'b', 'J', 'f', 'T', '2317', 'O', '5755', '8201', 'p', 'y', '8721', 'i']

Output: 35660


Input: Consider Input: ['135', 'a', 'X', '8067', '8447', '4009', '4221', 'o', 'A', 'x']

Output: 24879


Input: Consider Input: ['U', '7375', '627', 'h', '9187', 'j', '99', 'r', '9019', 'M', '8607', '1017', '3949', 'e', 'U']


Output: 39880