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: ['C', '3133', '2183', '5793', '9305', 'd', 'g', '6501']

Answer: 26915


Question: ['1869', 'q', '5919', 'D', '7733', '2641', 'h', '1327']

Answer: 19489


Question: ['T', 'Q', '8903', 'D', '4817', '3857', '6621', 'K', 'd', '9469', '9711', '4925', '7943', '6883', 'c', 'C', 'i', '7989', '8123', 'Q']

Answer:
79241