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:
['v', '3135', 'J', 'm', 'a']

Ex Output:
3135


Ex Input:
['6515', '5525', 'o', 'Q', '9049', 'f', 'p', 'X', '2057', 'h', '7585', '3617', '7817']

Ex Output:
42165


Ex Input:
['N', '2027', 'J', '5455', '6465', '5933', '6635', '565', 'M', 'M', 'n', '5457', '4755', '8891', 'w']

Ex Output:

46183