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]: ['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']
[A]: 12302


[Q]: ['901', '1939', '7637', '8863', 'X', '5003', '8791', '4757', 'E', '1525', 'y', '9735']
[A]: 49151


[Q]: ['F', 'N', 'A', 'Z', '7911', 'z', 'n', '5721', '1529', 'k', '9083', 'n', 'g', 'z']
[A]:
24244