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]: ['5347', 'E', 'a', '5379', '405', '1171', 'v', 'J']
[EX A]: 12302

[EX Q]: ['A', '9775', '5867', 'n', '1329', '5973']
[EX A]: 22944

[EX Q]: ['8707', 'w', 'Q', 'A', 'z', 'a', '4851']
[EX A]:
13558