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', '3561', '4631', '8379', 'W', '6857', '2723', '5393', 'h', 'g', 't', 'I', 'R', '2321', 'l']
[A]: 33865


[Q]: ['1123', '2765', '9395', '9695', '7963', '3813', '9987', 'y', 'N', 'F', '2757', 'o', 'r', '4827', '3523', 'G', 'j', '9785', 'C']
[A]: 65633


[Q]: ['V', '371', '2379', '8683', '1399', '6739', '5173', '7273', '5879', 'z', '247', '139']
[A]:
38282