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: ['4437', '1265', '1519', 'K', 'Q', 'b', 'n', 'J', '6631', 'K', 'q', 'D', 'U', 'u', '3653', '5169', 'L', 's']

A: 22674
****
Q: ['6051', '5303', '1509', '2797', 'Z', '4777', '721', '8563', 'K', '63', '9115', 'd', '7305', '9743', '7409']

A: 63356
****
Q: ['8553', '9151', '4883', '8855', '4707']

A:
36149
****