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]: ['6019', '1467', '3415', '7785']
[A]: 18686


[Q]: ['9269', '3971', '5285', '9243', '7683', 'x', '7555', '9651', 'F', '5915', 'E', '4189']
[A]:
62761