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:
['J', '177', '8449', '2067', 'a', 'G', 'p', 'd', '5161', 'M', '2403', '5541', 'q', '4375', 'O']

Ex Output:
28173


Ex Input:
['2417', '6671']

Ex Output:
9088


Ex Input:
['g', 'x', '3591', 'm', '4345', 'C', 'K', '7159', '3697', '1957', '3041', 'J', '6913', 'E', '8913', '3919', '6743', 'A', 'x', '9807']

Ex Output:

60085