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: ['U', 'd', '893', 'h', '9679', '315', 'H', '339', '2381', '847', '7951', 'e', '9269', '9081', 'o', '6439', 'N', '4531']

Output: 51725


Input: Consider Input: ['w', '4181', 'g', 'j', '1823', 'q', 'i', '709']

Output: 6713


Input: Consider Input: ['D', 'e', '2669', 'a', 'x', 'D', 'x', '2373', '5235', 'P', 'K', '2235']


Output: 12512