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]: ['6293', 'o']
[A]: 6293


[Q]: ['x', '1887', 'E', '3995', '5677', '2749', '9951']
[A]: 24259


[Q]: ['b', 's', 'v', '4757', '9063', 'I', '8397', '7975', 'Q']
[A]:
30192