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:
['6815', 'A', '1055', '4687', '8675', '4615', 'a', '2127', 'w', 'l', 'J', '5025', 'c', 't', '9727', 'G', '8431']

Ex Output:
51157


Ex Input:
['A', '9979', '8723', '1131', 'i', 'p', 'M']

Ex Output:
19833


Ex Input:
['E', '2379', '1565', '3543', 'Y', '8881', 'e', 'U', 'H', '9711']

Ex Output:

26079