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]: ['3319', 'e', 'c', 'G', '2399', '1557', '4813', 'z', 'U', '4895', 's', '1193', 'A', 'G']
[EX A]: 18176

[EX Q]: ['4145', 't']
[EX A]: 4145

[EX Q]: ['1125', 'i', 'l', 'w', 'H', '3745', '6959', 'K', '715', '3099', '1669', 'I', 'V', '7405', '333', 'o']
[EX A]:
25050