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:
['a', 'q', '4085', '6327', '6869', 'Z', 't', '7057', '1965', 'p', 'o']

Ex Output:
26303


Ex Input:
['b', '5447', 'R', '8489', 'L', '627', 'P', '7491', 'c', 'c', 'r', '6923', '1167']

Ex Output:
30144


Ex Input:
['x', 'v', 'J', 'T', '6139', '9589', '9913', 'C', '6029']

Ex Output:

31670