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:
['J', '5149', 'H', 'L', 'm', 'h', '3863', 'n', 'z']

Ex Output:
9012


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:
['s', '9401', '4165', '2143', '5389', '825', '4603', 'E', 'h', '7417']

Ex Output:

33943