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:
['3565', 'z', '8811', 'z', 'U', '113', 'I', '1307', '135', 'V', 'P', '5183', '2505', '4863', '1113', 'A', '7575', '827', 'B']

Ex Output:
35997


Ex Input:
['7465', 'G', '105', 'A', '3987', 'O', '7385', 'C', '8957']

Ex Output:
27899


Ex Input:
['S', '9743', '7741', 'm', 'K']

Ex Output:

17484