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:
['u', 'i', 'z', 't', '9617', 'd', '3255', 'w', 'S', '3041', '7451']

Ex Output:
23364


Ex Input:
['6001', '6423', '5591', '8721', 't', 'x', '3723', 'E', 'F', '7353', 'b']

Ex Output:
37812


Ex Input:
['o', '4849', '887', 'D', '6569', 'C']

Ex Output:

12305