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: ['e', 'T', 'O', 'q', '5511', 'G', 'm', 'E', '2153', 'O', '1139', '5097', 'n', '5653', 'v']

Answer: 19553


Question: ['G', 'Z', '4819', '9763', '9987']

Answer: 24569


Question: ['2323', 'P']

Answer:
2323