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]: ['3629', '8785', '9537', '8479', '3523', 'c', 'C', '5093', '2405', 'y', '1145', '8987', 'f']
[A]: 51583


[Q]: ['9403', '2607', 'G', '7901', 'K', '7967', 'a', 'n', '1967', 'x', 'g', '1081']
[A]: 30926


[Q]: ['8989', 'q', 'C', 'q', '2245', 'u', '7187', '9377', '4063', 'M', '5593', 'P', 't', 'l', '6673']
[A]:
44127