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.

['7277', 'c', '9587', '2613', '853', 'w', 'y', '4067', 'o', 'u', 'j', 'W', '1517', 'x', 'Y']
25914

['b', 's', 'v', '4757', '9063', 'I', '8397', '7975', 'Q']
30192

['1141', '6995', 'Y', '1315', '9377', '1939', 'm', '8003', '9057', '5387']

43214