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:
['q', 'U', 'I', '5245', 'g', 'Y', 's', 'V', 'b', 'V', 'D', '1193', 'p']

Ex Output:
6438


Ex Input:
['O', '9829', '5265', 'U', 'z', '2843', '1483', '9293', '1327', '2015']

Ex Output:
32055


Ex Input:
['r', 'K', '2037', 'N', '6351']

Ex Output:

8388