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:
['83', 'k', 'p', 'o', 'b', '7819', '2089', '4141', 'c', 's', '6045', '6783', 'J', 'B', 'x', 'O', 'X', '9693']

Ex Output:
36653


Ex Input:
['m', '4645', '711', 'l', '5085', '8989', '2387', 'n', 'V', '1613', '4011', '3261', 'p', 'X', '349', 'e']

Ex Output:
31051


Ex Input:
['5971', 'w', '4129', 'y', 'X', '3635', '6489', '4589', '7433', '7723', 'u', '4919', '2461', '7009']

Ex Output:

54358