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:
['e', 'K', 'A', 'V', '1169', 'n', '8729', 'V']

Ex Output:
9898


Ex Input:
['6303', '3145', 'i', 'm', '9985', 'c', 'D', 'h', '7711', 'F', 'Z', '6939', '8955', '2485', '4519', '4335', 'Y', 'M', 'y', 'g']

Ex Output:

54377