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.

['6121', 'S', '8683', 'Y', '6107', 'B', '6193', '5555', '365', '945', '1439', '7257', 'g']
42665

['3215', 'h', '9133', '2771', 'F', 'x', '9033', '709', 'q']
24861

['4659', 'V', '7809', '331', '841', 'E', 'N', 'A']

13640