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: ['F', 'v', 'G', '6023', 'M', 'Q', 'A', '8477', '2079', 'A', '813', 'C', '3479', 'G', '1977', '5569', '8749', 'Y']

Output: 37166


Input: Consider Input: ['l', '5369', 'z', 'U', 's', '2357', '3367', 't', '6539', 'K', 'a', 'Q', 'x', 'e', '6459', 'K', 'B', 'f', 'j']

Output: 24091


Input: Consider Input: ['5833', 'O', '2435', 'P', '9223', 'O', 'Y', '879', 'o', '7005', 'B']


Output: 25375