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]: ['3469', 'n', '5561', '8597', '921', '4737', 'r', 'P', '7127', '3651', 'D', '1703', 'y']
[A]: 35766


[Q]: ['a', 'f', '2185', 'N', '6381', '6429', '7499', 'd', '757', 'k', 'k', 'b', 'N', '2697', 'A', '8037']
[A]: 33985


[Q]: ['7801', 'e', '7497', 'k', 'O', 'i', '3835', 'S', 'w', '6847', 'X', 't', '1471', 'w', 'o', '9895', 'd', '7177', 'G']
[A]:
44523