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: ['q', 'Y', '6021', '4045']

A: 10066
****
Q: ['i', 'o', '5363', '5937', 'x', '6705', 'w', '5495', 'E', '9823', 'F', '83', '8443', '5223']

A: 47072
****
Q: ['1293', '7059', 'b', 'Y', 'n']

A:
8352
****