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: ['597', 'i', 'd', '3201', 'u', '1111', '8563', 'c', 'E', '5983', '6293']

A: 25748
****
Q: ['D', '1693', 'f', 'B', 'o', '3947', '8667', 'f', '6721', '4191', '79']

A:
25298
****