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: ['9403', '2607', 'G', '7901', 'K', '7967', 'a', 'n', '1967', 'x', 'g', '1081']

Output: 30926


Input: Consider Input: ['1073', 'i', 'o', 'j', 'O', 'g', 'X', '3261', '5105', '4831', 'J']

Output: 14270


Input: Consider Input: ['J', 'b', 'X', 'A', 't', '7971', '2827', '1889', 'i', 'r', 'p', '9529', '4481', 'a', 'J']


Output: 26697