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: ['4241', 'E', '1807', '2877', '5125', '7625', 'S', '401', '5081', 'u', 'R', 'F']

Answer: 27157


Question: ['3497', '761', '6157', 'J', 'n', '139', '9895', '2939', 'K', 'I', '2161', 'c', 'a', '485', '7959', 'i', '4753', '3305', 'G', '3475']

Answer: 45526


Question: ['Q', '7803', '5239', '2225', 'y', 'J', 'V', '117', '117', 'h', 'B', '9301', 'p', 'a', '117', 'A', '239', '2277']

Answer:
27435