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: ['z', '9173', 's', '8937', 'h', '1881', '7929', 'b', '2441']

A: 30361
****
Q: ['2683', '4431']

A: 7114
****
Q: ['3033', 'D', '3699', '4507', 'Z', '6947', '4897', 'p', 'C', 'x']

A:
23083
****