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]: ['D', 'G', '9895', '143', '37', 'S', '1539', 'x', 'a', 'x', 'B', 'i', '9719', '839']
[A]: 22172


[Q]: ['1493', 'x', 'h', '31', '3327', '1621', '4529', 'd', '377', 'R', 'X', 'Z', 'G']
[A]: 11378


[Q]: ['1583', 'w', 'A', '5971', 'L', 'L', '3421', '4271', '7033', 'B', '5987', 'I', 'v', 'H', '9069', '4845', 'G', 'S', 'd', 'O']
[A]:
42180