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: ['4241', 'E', '1807', '2877', '5125', '7625', 'S', '401', '5081', 'u', 'R', 'F']

Output: 27157


Input: Consider Input: ['J', '177', '8449', '2067', 'a', 'G', 'p', 'd', '5161', 'M', '2403', '5541', 'q', '4375', 'O']

Output: 28173


Input: Consider Input: ['9581', 'Y', '1407', 's', 'B', '7715', 'H', 's', 'X', '6717', '5335', '1703', '2387']


Output: 34845