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: ['x', 'd', '5121', 'I', '6737', '3789', '6167', 'C', '8947', 'k', '4715', '1885', 'H', 'B', '5685', 'S', '4615', 's', '7709']

Output: 55370


Input: Consider Input: ['129', '8667', 'E', '2919', 'e', 'Y', 'h', 'm', '501', '5911', 'q', '4955', 'D', '1369', 'W']

Output: 24451


Input: Consider Input: ['m', '7367', '4825', 'e', '9949', '6181', 'r', 'j', 'O', '6957', '473']


Output: 35752