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:
['D', '8591', 'b', 'n', 'e', '883', '8923', '245', 'z', '5643', 'C', '2911', '9275', '711', '7299', '3449', '4799', '6065']

Ex Output:
58794


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

Ex Output:
9088


Ex Input:
['w', 'o', '369', 'm', '6075', '9045', '1753', 'g', '2059', 'B', 'g', 'q', 'v', '1883']

Ex Output:

21184