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: ['Q', '8317', '8989']

Output: 17306


Input: Consider Input: ['5947', 'n', '9431', '7629', '7643', 'N', '141', '2353', 'l', 'F', '9665', '9489', 'X', '4905', 'H', 'L', '985']

Output: 58188


Input: Consider Input: ['917', '4545', 'S', 'h', '7771', '7737', 'E', '4079', 't', '31', 'H', 'H', 'g', 'L', '1147', '4533']


Output: 30760