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]: ['5947', 'n', '9431', '7629', '7643', 'N', '141', '2353', 'l', 'F', '9665', '9489', 'X', '4905', 'H', 'L', '985']
[EX A]: 58188

[EX Q]: ['W', '3629', '6053', '1035', '1717', 'n', 'y', '9585', 'D', '5125', 's', '9801', '2905', 'E', '5797', 'T']
[EX A]: 45647

[EX Q]: ['j', '4961', '1417', 'd', 'M', '6377', '3505', 'W', 'M', '1425', '5391']
[EX A]:
23076