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:
['6367', '9923', '9141']

Ex Output:
25431


Ex Input:
['61', '5695', 'u', '253', 'n', '1035', 'd', '3017']

Ex Output:
10061


Ex Input:
['3735', '1805', 'Q', 'M', '6657', 'C', 'H', '4595', '5961', 'k', '8413', 'w']

Ex Output:

31166