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: ['i', 'o', '1321', 'I', 'W', 'e', '1201', 'I', 'e', 'F', '9841', 'm', '9827', 'q', 'f', 'X', '8261']

Answer: 30451


Question: ['4177', 'd', 'b', 'm', 'f', 'R', '797', '7905', '4355', '7515', '9801', 'F', 'R', '9125', '8445', 'k', 'K', 'K']

Answer: 52120


Question: ['j', '1939', '1091', 'J', '319', 'b', '9605', 'y', 'J', 'z', '3635', 'u', 'V', 'g', '2705']

Answer:
19294