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.

Ex Input:
['3809', '9401', '63', '5705', 'u', '6275', 'k', 'l', '1171', '9365', 'L', 'O', '7431', '8567', 'h', '6135']

Ex Output:
57922


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

Ex Output:
27157


Ex Input:
['1267', 'd', '6819', '4031', '4793', '3645', 'q', '3115', '401', '4005']

Ex Output:

28076