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 Input:
['C', '3133', '2183', '5793', '9305', 'd', 'g', '6501']

Ex Output:
26915


Ex Input:
['6565', 'T', 'O', '2901', '5121', 'y', '9617', 't', '7825']

Ex Output:
32029


Ex Input:
['5173', 'E', '3205', '3689', '71']

Ex Output:

12138