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]: ['6565', 'T', 'O', '2901', '5121', 'y', '9617', 't', '7825']
[EX A]: 32029

[EX Q]: ['9863', 'y']
[EX A]: 9863

[EX Q]: ['x', '3139', 'V', '25', '6253', '9025', '2033', 'v', 'C', '5321', 'H']
[EX A]:
25796