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: ['W', 'c', '7971', 'J', 'o']

A: 7971
****
Q: ['1123', '2765', '9395', '9695', '7963', '3813', '9987', 'y', 'N', 'F', '2757', 'o', 'r', '4827', '3523', 'G', 'j', '9785', 'C']

A: 65633
****
Q: ['6963', '75', '2667', 'f', '8787', '1897', '3911', 'P', '8285', '2171', 'b', 'I', 'm', '8785', '9463']

A:
53004
****