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: ['f', 'N', '8597', 't', 'K', '9755', 'j', '9747', '7259', '5493', 'n', '7269', '8493', '2279', '5369', 'f']

Answer: 64261


Question: ['6515', '5525', 'o', 'Q', '9049', 'f', 'p', 'X', '2057', 'h', '7585', '3617', '7817']

Answer: 42165


Question: ['R', '8957', 'x', 'Z', '5857', '5149', 'r', '9159', 'j', 'P', '7943']

Answer:
37065