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.
--------
Question: ['3877', '2685', 'f', 'r', 'q', 'o', 'k', 'i', '2299', '9075', 'X', '4303', '7379', '9205', 'V', '9655', 's']

Answer: 48478


Question: ['D', '9679', 'e', '5537', 'G', 'l', '2653', 'a', 'Y', '8467', 'q', 'L', '7239', 'O']

Answer: 33575


Question: ['P', '6865', '785', '9469', '6443', '7853', '4417', '7551', '9807', 'Z', '201', '1003', '3843']

Answer:
58237