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.

[Q]: ['K', 'p', '97', 'R', '2999', 'u', '7307', '6033', '6431', 'm', 'T']
[A]: 22867


[Q]: ['6723', '1', '6357', '1497', 'A', 'p', 'N', 'T']
[A]: 14578


[Q]: ['1775', '4219', '4531', 't', 'J', 'u', 'J', 'X', '5085', 'v', 'z', '3357', '117', 'Z', '787', '2067']
[A]:
21938