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:
['d', '6851', 'o', '5521', 'l', '3911', 'w', '1005', 'e', '3323', 'r', '7311', '4377']

Ex Output:
32299


Ex Input:
['2585', '3043', 'w', '7697', '53', 't', 'A']

Ex Output:
13378


Ex Input:
['4629', 'r', 's', '6667', 'C', 'v', 'l', '2203', 'U', 'G', '1857']

Ex Output:

15356