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: ['2625', '1611', 'E', '4507', '3013', '1569', 'M', '2607', '1111', 'W']

Answer: 17043


Question: ['h', 'a', '1645', '2391', '759', '519', '3331', '2831', '3427', '9893', 'u', 'J', '7391', '8379', 'V']

Answer: 40566


Question: ['q', 't', '4837', 'F', '2367', '1867', '8361', 'm']

Answer:
17432


