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.

['3121', 'j']
3121

['F', 'v', 'G', '6023', 'M', 'Q', 'A', '8477', '2079', 'A', '813', 'C', '3479', 'G', '1977', '5569', '8749', 'Y']
37166

['9155', 'C', 'J', '6241', 's', '1471', '4529', 'H', '9235', 'O', 'e', 'q', '9955', '6665', 'Y', '827', 'p', 'D', '2045', '2167']

52290