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]: ['C', 'v', '1353', 'e', 'x', 'A', 'D', '1243', '477', 'z', '3483', '5213', 'k', 'm', 'n']
[A]: 11769


[Q]: ['9403', 'u', '4159', 'w', '3467']
[A]: 17029


[Q]: ['4597', 'f', 'v', 'W', '771', '1907', 'c', '1831', '2127']
[A]:
11233