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:
['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']

Ex Output:
12302


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:
['3', '8965', '7581', 'H', '4187', '1571', 'Z', 'x', '2405', 't', '2077']

Ex Output:

26789