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]: ['P', '6161', 'k', '5925', 'h', 'G', 'n']
[A]: 12086


[Q]: ['9863', 'y']
[A]: 9863


[Q]: ['6333', 'y', 'N', '8435', 'n', '2995', 'K', '1271', 'r', 'r', '4937', '9527', 'o', '559', 'T', 'A']
[A]:
34057