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: ['q', '8155', 'L', 'v', '2657', 'X', 'v', '2353', '151', 'R', '967', '4327']

Answer: 18610


Question: ['X', 'P', 'x', '9471', '5', 'c', 'f', '5077', '1085', '2267', 'R', 'q', '4987', '9529', 'H', 'n', 'r', 'u']

Answer: 32421


Question: ['a', 'T', 'p', 'Y', '379', '4979', 'X', 'w', '6279', 't', '3391', '5201', '173', '7345', 'n', 'q']

Answer:
27747