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: ['6551', 'm', '3941', 'F', 'K', 'u', '7981', '9581', 'X', 'M', 'N', 'e', 'G', 'i']

Output: 28054


Input: Consider Input: ['8667', '4129', '7075', '6345', '1315', 'M', 'F', '9073']

Output: 36604


Input: Consider Input: ['8197', 'h', 't', 'P', 'I', 'S', '4917', 'J', '965', '1499', '6309', 'Y', '5949', '1063', 'A', '1973', 'u', 'K']


Output: 30872