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: ['5021', 'q', '4109', 'g', 'w', 'C', 'w', '239', 'N', '9755', '8591', '7083', 'Q', '7907', 'w', 'U', 'a', '4901', 'k', 'G']

A: 47606
****
Q: ['S', '1249', '6233', 'I', '6733', 'r', 'A', 'E', 'h', 'x', 'p', 'c', '515', '1029', '1593', '1035']

A: 18387
****
Q: ['s', 't', 'W', '163', 'v']

A:
163
****