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]: ['U', '9593', '2079', '5959', 'T', '5849', 'w', 'b', '9743', '6689', 'k', 'J']
[A]: 39912


[Q]: ['6055', 'v', '9455', 'A', '6817', 'D', '9339', 't', 'K', '1993']
[A]: 33659


[Q]: ['h', '7397', '4257', '1567', 'F', '9509', 'c', 'S', 'h', '4119', 'N', 'k']
[A]:
26849