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: ['2729', 'W', 'i', '9073', '343', 'j', '2329', '9159', '4825']

Answer: 28458


Question: ['6011', 'G', '9043', '8009', 'e', '9493', 'G', '7969', 'M', 'n', 'p', 'g', '7925', 'H', '3213', '8095', '97', 'F']

Answer: 59855


Question: ['9955', 'V', '8909', 'B', 'R', '8401', 'k', '6925', '8741', 'Q', 'f', 'u', '2231']

Answer:
45162