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]: ['3809', '9401', '63', '5705', 'u', '6275', 'k', 'l', '1171', '9365', 'L', 'O', '7431', '8567', 'h', '6135']
[A]: 57922


[Q]: ['h', 'a', '1645', '2391', '759', '519', '3331', '2831', '3427', '9893', 'u', 'J', '7391', '8379', 'V']
[A]: 40566


[Q]: ['G', 'Z', 'J', 'i', '273', '2229', '6153', '929', '9337', 'N', 'x', '9137', 'u', 'k', '6409', '6051', '9563', '3721', '5843']
[A]:
59645