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]: ['61', '5695', 'u', '253', 'n', '1035', 'd', '3017']
[A]: 10061


[Q]: ['Z', '4157', '5185', 'U', 'i', '1115', 'A', '7427', '3313', 'S']
[A]: 21197


[Q]: ['v', '9433', 'r', '8829', 'P', 'w', 'm', 'T', '7601', '7719', '789', 'A', '5789', 'l', '2859', '9875', '2631', 'y', '6397', 'i']
[A]:
61922