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.

['3723', 'v', 'j', 'e', '2017', 'd', '4211', '2079']
12030

['9125', '1443', '2303', 'O', '8463', '401', '3983', 'g', '4327', 'z', 'n', 'F', 'Q', 'j', '9885']
39930

['5839', 'i', 'R', 'a', '8531', 'Y', '7601', 'i', 'm', '1301', '893', '9189', '1153', '9071', 'k', 'A']

43578