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]: ['K', 'O', 'p', '1669', '8647', '3417', 'a', '8903', 'V', 'E', 'l', 'a', '5177', 'J', '6559', '5377', 'X', '9427']
[EX A]: 49176

[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]: ['7715', 'P', 'T', 'K', 'c', '9057', '2287', 'i', '2737', 'O', 'o', 'u', '3683', '8393', '9573', 'q']
[EX A]:
43445