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]: ['89', '5965', '9463', 'k']
[A]: 15517


[Q]: ['e', '9777', '1835', 'N', '2425', '1427', 'o', '4459', '9961', '3285', '5199', 'x', 'e', '7727']
[A]: 46095


[Q]: ['O', '5275', 'q', '8195', 'g', '2357', '8965', 'F', '4977', '6887', '9247', 'P', '1863']
[A]:
47766