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: ['q', '8155', 'L', 'v', '2657', 'X', 'v', '2353', '151', 'R', '967', '4327']

Output: 18610


Input: Consider Input: ['4437', '1265', '1519', 'K', 'Q', 'b', 'n', 'J', '6631', 'K', 'q', 'D', 'U', 'u', '3653', '5169', 'L', 's']

Output: 22674


Input: Consider Input: ['C', 'v', '1353', 'e', 'x', 'A', 'D', '1243', '477', 'z', '3483', '5213', 'k', 'm', 'n']


Output: 11769