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', 'G', '5059', '8343', '8673', 'P', 'N', '5485', '2279', '6121', 'i', 'U', '7277', '8701', 'A', 'b', 'Z', 'R', '6371', 'G']
[A]: 58309


[Q]: ['M', 'F', '4477', '1565', '4407', 'r', 'v', '7237', '83', '5243', 'O', 'z', 'W', '7703', 'Q', 'i', '9657', 'n']
[A]: 40372


[Q]: ['5237', 'a', '3959', 'l', '4981', '4661', '3601', 'A', 'D', '1051', '8691', '4481', 'Q']
[A]:
36662