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

A: 18387
****
Q: ['Q', '8317', '8989']

A: 17306
****
Q: ['D', 'g']

A:
0
****