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:
['Y', 'X', 'd', 'N', '1877', '2865', 'M', '1249', '9385', 'v', 'o', 'P', 'P', '6029']

Ex Output:
21405


Ex Input:
['E', '1657', 'w', '1219', '8185', '5729', '6185', 'g', 'I', 'P', '9683', 'V', 't', '5695']

Ex Output:

38353