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:
['m', 'g', '7251', '5873', '59', '7345']

Ex Output:
20528


Ex Input:
['l', '9361', 'L', '1965', 'X', 'b', 'X', '7913', 'L', '541', '4701', 'Z', 'f', 'g', '3865', 'b', '1519', 's', '8013']

Ex Output:

37878