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: ['S', 'D', '3101', '4967', '8197', '5025', '4257', 'S', 'X', '7641', 'n', '6775', '4719', 'o', '2821', 'x', '5605', '2181']

Output: 55289


Input: Consider Input: ['e', 'T', 'O', 'q', '5511', 'G', 'm', 'E', '2153', 'O', '1139', '5097', 'n', '5653', 'v']

Output: 19553


Input: Consider Input: ['9345', 'R', 'S', '8461', '7255', '1391', 'B', 'd', '7613', 'G', 'g', 't']


Output: 34065