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]: ['n', 'W', '565', '6625', '903', 'o', '7995', '8339', '5251', 'e', 'a', '1081', '5813', 'o']
[EX A]: 36572

[EX Q]: ['2975', '33', '2845', '4695', 'j', '607', 'e', 'z', '6339', '1899', 'q', 'O']
[EX A]: 19393

[EX Q]: ['c', '6971', 'Y', '23', 'S', 'x', '7635', 'c', 'y', '4001', 'Q', 'd', '5291', '4883']
[EX A]:
28804