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:
['X', 'u', 'B', '269', '9089', 'M', '5175', 'K']

Ex Output:
14533


Ex Input:
['r', '2251', 'X', 'H', 'a', '5463', 'g', 'M', '9797', '1581', 'o', 'm', 'v', 'E']

Ex Output:
19092


Ex Input:
['D', 'Z', '6195', 'J', 'a', 'C', '4473', 'Z', '843', '8669', '9617', '3849', 'f', '8335', 'U', '5687', 'o', '8779', '7509']

Ex Output:

63956