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:
['b', '5689', '119', 'p', 'P', 'J', 'w', 'm', '7397', 'Y', '447', 'O', 'p', '319', 'H', 'U']

Ex Output:
13971


Ex Input:
['o', 'L', 'E', 'V', 'D', 's', 'Z', 'm', 'a', '2785', 'I', 'v', 'B', '7909', '1599', 'V', 'N']

Ex Output:
12293


Ex Input:
['i', 'j', '91', 'J', '9613', '311', 'd', '531', '203', 't', '5005', 'U', '233', '8917', 'x', '1203', 'S', '6873', '4191', 'i']

Ex Output:

37171