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: ['R', 'k', '3355', 'Y', '6635', 'M', '4839', 'T', 'd', '495', 'g', 'E', 'g', 'F', 'S', '5377', 'g']

Answer: 20701


Question: ['2469', 'c', '6931', 'a', '2167', '9493', '9403', '4123', '4949', 'R', 'V', 'h', '315', 'T', '9411', 'M', '1329', '8217', '6105', 'Y']

Answer: 64912


Question: ['8223', 'z', 'v', '5181', '2441', '9811', 'D', 'L', '5575', '3751', '3629', '5161', 'e', '7651', 'q', '7207', 'f', 'O', 'Q', 'T']

Answer:
58630