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: ['z', 'c', 'E', 'Q', '1839', 'g', 'X', 'c', '291', 'c', 'w', 'e', '5957', 'X', '6471', 'A', '8359', 'y', '3611', '5417']

Output: 31945


Input: Consider Input: ['6161', 'p', '2839', 'c', '5905', '1729', 'j', '5901', '3013', 'e']

Output: 25548


Input: Consider Input: ['I', 'T']


Output: 0