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: ['3433', '6955', 'Q', 'E', '3557', 'S', '2931', '9879', 'S', 'f', 'Q']

Output: 26755


Input: Consider Input: ['3809', '9401', '63', '5705', 'u', '6275', 'k', 'l', '1171', '9365', 'L', 'O', '7431', '8567', 'h', '6135']

Output: 57922


Input: Consider Input: ['3763', '7847', 'i', 's', 'q', 'S', '2475', '3331', '609', 'L', '3335', '7829', '1073', '3411', '53', 'L', '6715']


Output: 40441