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:
['887', '8133', 'X', '2253', '8461', 'I', '5425', 'Z', 'z', 'r']

Ex Output:
25159


Ex Input:
['2577', 'B', '3059', 'S', 'l', 'T', 'Q', 'x', 'f', 'l', 'y']

Ex Output:
5636


Ex Input:
['4919', 'y', '2399', '8153', '6451', 'A', '7231', 'd', 'D', 'j', 'q', '7703', '5487', '2829', '1237', 'I', 'l', '2743', 'G', '1445']

Ex Output:

50597