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]: ['457', '173', '6807', 'o', '555', 'l', 's', 'Z', 'm', '3035', '1283', '5645', 'S', '8641', 'J', 'Z', 'z', 'K']
[A]: 26596


[Q]: ['5573', '6221', 'C', '8649', '6603', 'q', '9403']
[A]: 36449


[Q]: ['1029', 'm', 'd', '2355', '5965', '1721', '8461', 'B', '679', 'E', 'c']
[A]:
20210