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]: ['n', 'u', '9595', 'M', 'o', 'K', '5073', 'x']
[A]: 14668


[Q]: ['6669', 'n', 't', 'N', 'x', '8153', 'W', 'v', 'B', '3181', 'y', 'e', '3491']
[A]: 21494


[Q]: ['S', 'V', '285', '567', 'L', '711', '1947', '7887', 't', 'd', '3623', 'd', 'N', '4073', 'r', '5117', '9331']
[A]:
33541