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]: ['I', '1941', '2423', '3381', 'J', '6589', 'h', 'D']
[EX A]: 14334

[EX Q]: ['M', '5201', '2787', 'z', '9465', 'X', 'X', '4017', '8305', 'y', '6897', 'y', '6045', '9863', 's', 'd', '3611', 'l', 'd']
[EX A]: 56191

[EX Q]: ['f', '3033', 'M', 'g', 'O', '5343', 'S', 'G']
[EX A]:
8376