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', 'k', '3355', 'Y', '6635', 'M', '4839', 'T', 'd', '495', 'g', 'E', 'g', 'F', 'S', '5377', 'g']

A: 20701
****
Q: ['t', '7015', '2239', 'I', 'F', 'E', '1363', '9615', '6179', '2539', 'z', '8745', '1319', '4715', '9071', 'K', '3707', '6149', 'd']

A: 62656
****
Q: ['7693', 's', 'd', 'e']

A:
7693
****