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]: ['8529', '2657', '1599', 'b', '8187', '7005', '7481']
[A]: 35458


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


[Q]: ['6131', '1007', 'g', 'M', 'h', 'd', '6729', '1831', '2563', '2197', 'l', 'v', 'n', '4445', 'V', 'K', 'N', 'f', 'w', '8305']
[A]:
33208