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: ['n', '6729', 'p', 'D', 'o', '1213', 'e', '6951', '2341', '9997', 'e', 'M', 'x', 'R']

Output: 27231


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

Output: 11769


Input: Consider Input: ['f', '2123', '1623', 'F', '6555', '8155', 'M', 'L', '7805', 'K', '2025', 'F', 't', 'J', 'k', 'k', '4833', '2063', 'C']


Output: 35182