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', '1887', 'E', '3995', '5677', '2749', '9951']

Output: 24259


Input: Consider Input: ['S', '1249', '6233', 'I', '6733', 'r', 'A', 'E', 'h', 'x', 'p', 'c', '515', '1029', '1593', '1035']

Output: 18387


Input: Consider Input: ['Y', 'n', 'T', 'O', '8961', 'f', '5091', '1913', 'h', '7337', 't', '5835', '1511', 'w', 'P', '8959']


Output: 39607