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: ['D', '1693', 'f', 'B', 'o', '3947', '8667', 'f', '6721', '4191', '79']

Output: 25298


Input: Consider Input: ['4241', 'E', '1807', '2877', '5125', '7625', 'S', '401', '5081', 'u', 'R', 'F']

Output: 27157


Input: Consider Input: ['2365', '1905', 'n', '8787', '225', '2533', '6849', '4653', '1265']


Output: 28582