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]: ['X', '6189', '5435', 'y', '8931', '8987', 'F', '8377', 'k', '8631', '8717', 'q', '2923', 'g', '7225', 'j']
[EX A]: 65415

[EX Q]: ['5021', 'q', '4109', 'g', 'w', 'C', 'w', '239', 'N', '9755', '8591', '7083', 'Q', '7907', 'w', 'U', 'a', '4901', 'k', 'G']
[EX A]: 47606

[EX Q]: ['1799', '1369', 'V', '4579', 'j', 'Y', '2331', '2711', '9569', '4269', 'G', 'D', '3353']
[EX A]:
29980