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: ['J', '5149', 'H', 'L', 'm', 'h', '3863', 'n', 'z']

A: 9012
****
Q: ['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']

A: 12302
****
Q: ['6837', 'l', '167', 'k', 'Q', 'j', '865', '7155', 'f', '5723']

A:
20747
****