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: ['E', 'X', 'C', 'v', '2803', 'g', 'b', '763']

Output: 3566


Input: Consider Input: ['V', 'O', '1309', 'm', '9333', '8283', 'Z', 'K', 'X', 'w', '9855', '9075', '2013', '8485', '9973', '8779']

Output: 67105


Input: Consider Input: ['387', '5633', '2409', '1269', '4697', '3351', 'C', 'k', 'S', 'B', 'D', '669']


Output: 18415