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:
['q', '8155', 'L', 'v', '2657', 'X', 'v', '2353', '151', 'R', '967', '4327']

Ex Output:
18610


Ex Input:
['A', '9979', '8723', '1131', 'i', 'p', 'M']

Ex Output:
19833


Ex Input:
['6755', '5891', 'G', 'V', 'j', '6631', 'G', 'w']

Ex Output:

19277