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]: ['x', '9895', 'r', 'H', 'C']
[A]: 9895


[Q]: ['6551', 'm', '3941', 'F', 'K', 'u', '7981', '9581', 'X', 'M', 'N', 'e', 'G', 'i']
[A]: 28054


[Q]: ['F', 'r', 'g']
[A]:
0