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.

[EX Q]: ['k', 'Z', 'r', 'K', 'b', 'X', 'A']
[EX A]: 0

[EX Q]: ['5095', '8235', '4901', 's', '4177', '3077', 'l']
[EX A]: 25485

[EX Q]: ['w', 'T', 'A', 'h', 'A', 'y', 'O', 'r', '8687', '5043']
[EX A]:
13730