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: ['t', '7015', '2239', 'I', 'F', 'E', '1363', '9615', '6179', '2539', 'z', '8745', '1319', '4715', '9071', 'K', '3707', '6149', 'd']

A: 62656
****
Q: ['4811', 'Q', '2289', 'N', 'I', '7681', 'z', '8179', '3359', '5299', 'R', 'z', '8697', '5781', '4803', '2715', '6511', '1371']

A: 61496
****
Q: ['Q', '2271', '1803', '2363']

A:
6437
****