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


[Q]: ['1203', '6179', '9835']
[A]: 17217


[Q]: ['j', '3921', 'T', 'y', '351', 'N', 'u', 'p']
[A]:
4272