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]: ['5021', 'q', '4109', 'g', 'w', 'C', 'w', '239', 'N', '9755', '8591', '7083', 'Q', '7907', 'w', 'U', 'a', '4901', 'k', 'G']
[A]: 47606


[Q]: ['4949', '2459', 'n', 'f', 'n', 'v', '8421', '1519', '4859', 'c', '9923', '2829', 'K', '4937', 'W', 'R']
[A]: 39896


[Q]: ['8029', 'n', 'j']
[A]:
8029