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', '5207', 'E', '119', 'g', '2991', 'G', 'g', 'u']

Ex Output:
8317


Ex Input:
['7067', 'E', 'C', '1879', 'Z', 'u', 't', '2053', '6769', 'r', '5207', '7009', 'H', '5587', 'i', 'M', '1357', 'A']

Ex Output:
36928


Ex Input:
['8081', '2209', 'i']

Ex Output:

10290