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.

['s', 't', 'W', '163', 'v']
163

['4241', 'E', '1807', '2877', '5125', '7625', 'S', '401', '5081', 'u', 'R', 'F']
27157

['9699', 'O', 'y', 'h', 's', '8387', 'r', 'X', 'E', 'I', 'C', '4703', 'v']

22789