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]: ['3051', '5343', 'k', 'k', '6815', 'E', '4745', 'A', 'A', '1251', '6649', 'f', '4133', 'X']
[EX A]: 31987

[EX Q]: ['w', '1335', 'G', 'h', '6729', '1999', 'u', 'I', 'r', 'm', '4757', 'W', '3715', '701', '1999']
[EX A]: 21235

[EX Q]: ['A', 'H', 'x', '5125', 'j', 'w', 'q', 'F', '887', '7861', 'W', '3825']
[EX A]:
17698