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:
['2215', '4369', 'e', '4979', '4069', 'J', 'L', '789', 'w', 'p', '9533', '8523', '2531']

Ex Output:
37008


Ex Input:
['x', 'V', 'g', '5469', 'c', '7873', 'T', 'p', '8109', '5395', 'h', 'z', 'T', '9373']

Ex Output:
36219


Ex Input:
['3417', 'x', '371', '8831', 'q', 'T', 'A', '7775', '6081', 'd']

Ex Output:

26475