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.

[EX Q]: ['9401', 'w', 'b', '8287', 'n', 'O', 'H', 'h', '45', '2337']
[EX A]: 20070

[EX Q]: ['6723', '1', '6357', '1497', 'A', 'p', 'N', 'T']
[EX A]: 14578

[EX Q]: ['w', 'F', 'Y', 'E', '3951', '4447', '3693', '4611', 'X', '7759', '3801']
[EX A]:
28262