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:
['F', 'v', 'G', '6023', 'M', 'Q', 'A', '8477', '2079', 'A', '813', 'C', '3479', 'G', '1977', '5569', '8749', 'Y']

Ex Output:
37166


Ex Input:
['7973', 'J', '9035', 'H', '4051', '2661', 's', 'z', '8225', 'M', '4153']

Ex Output:
36098


Ex Input:
['2717', '8003', 'Y', 'c', 'Q', 'w', 'R', '3949', '2095', '551', 'H', '9081', 'q']

Ex Output:

26396