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]: ['G', 'e', 'R', '4427', '3401', '3065', 'I', '2781', '6829', '5261']
[A]: 25764


[Q]: ['2895', '8095', 'y', '1927', '4827']
[A]: 17744


[Q]: ['I', '9353', 'B', 'a', '9695', 'w', '4311', '8369', '4805', '8655', 'y', '6097', '6163']
[A]:
57448