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: ['R', '9751', '4367', 'l', 'N', '5125', '8751', '7507', 'y', 'K', '6127']

A: 41628
****
Q: ['k', '4991', '7289', '4355', 'I', '8415', '5175', '5329', 'G', 'a', '7193', 't', '8821', 'j', '7239', '405', 'y', 'O', '9881', 'w']

A: 69093
****
Q: ['5855', '4249', '3521', '9185', 'B', '6183', '5871', 'E', '9517', '6345', 'Z', '125', 'q', 'A', 'v', 'I', '4671', '7797', '3281']

A:
66600
****