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: ['D', '9679', 'e', '5537', 'G', 'l', '2653', 'a', 'Y', '8467', 'q', 'L', '7239', 'O']

Output: 33575


Input: Consider Input: ['v', '9511', 'f', 'q']

Output: 9511


Input: Consider Input: ['7365', 'A', '1145', '2337', '1999', '6793']


Output: 19639