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: ['8609', '8045', '2517', '3821', 'x', '3895', 't']

Output: 26887


Input: Consider Input: ['A', '9785', '1739', 'x', '2389', 'O', 'J', '1407', '9067', 'x', '9747', '2485', '4631', '6021', '4077', '2779', 'V', '2449', '7401']

Output: 63977


Input: Consider Input: ['j', 'g', 'Z', 'B', '8083', 'b', 'K', 'v', '29']


Output: 8112