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:
['o', 'O', 'H', '7619', '6435', 'X', 'g', '1663']

Ex Output:
15717


Ex Input:
['6011', 'G', '9043', '8009', 'e', '9493', 'G', '7969', 'M', 'n', 'p', 'g', '7925', 'H', '3213', '8095', '97', 'F']

Ex Output:
59855


Ex Input:
['q', 'Y', '6021', '4045']

Ex Output:

10066