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]: ['Z', 'w', 'M', '2233', '5275', '5277', 's', '971', '7085', '6259', 'V', 'E', '4923', '7365', 'c', 'd', 'c', 'U', 'P']
[EX A]: 39388

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

[EX Q]: ['k', 'u', '8927', '9101', 'j', '7617', 'H', '3823', '5309', 'e', 'n', '1785', '3189']
[EX A]:
39751