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.

Q: ['8809', '4559', '2715', 'w', '9903', 'h', 'u', 'F', '9369', '6149']

A: 41504
****
Q: ['2975', '33', '2845', '4695', 'j', '607', 'e', 'z', '6339', '1899', 'q', 'O']

A: 19393
****
Q: ['9197', 'b', '5053', 'S', '6605', '7373', 'O', '3159']

A:
31387
****