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: ['x', '1305', 'b', '8193']

A: 9498
****
Q: ['G', 'e', 'R', '4427', '3401', '3065', 'I', '2781', '6829', '5261']

A: 25764
****
Q: ['X', 'g', '5657', 'O', 'Q', '7899', '4515', '3247']

A:
21318
****