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]: ['a', 'f', '2185', 'N', '6381', '6429', '7499', 'd', '757', 'k', 'k', 'b', 'N', '2697', 'A', '8037']
[EX A]: 33985

[EX Q]: ['d', '6851', 'o', '5521', 'l', '3911', 'w', '1005', 'e', '3323', 'r', '7311', '4377']
[EX A]: 32299

[EX Q]: ['w', 'j', '5559', '1967', '9879', '5735', 'H', 'f', 'B', 'S', '7711', '1429']
[EX A]:
32280