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: ['N', '1337', 'C', 'T', '863', 'j', '2369', 'P', 'A', 'x', '5725', '2333', 'Q', '9149', 'Q', '8529', 'N']

A: 30305
****
Q: ['8109', '5635', 'u', 'M', '1009']

A: 14753
****
Q: ['h', '9887', 'J', 'u', 'A', 'Z', 's']

A:
9887
****