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:
['7379', 'I', '2031', '8419', 'w', 'b', '9827', 'X', 'Y', 't', '3789', 'B', 'c', '6599', 'F', '6169', 'V']

Ex Output:
44213


Ex Input:
['n', 'W', '565', '6625', '903', 'o', '7995', '8339', '5251', 'e', 'a', '1081', '5813', 'o']

Ex Output:
36572


Ex Input:
['M', '293', '933', '3757', 'K', 'O', '833', '8045', 'W', 'Z', '6757', '5145', 'N']

Ex Output:

25763