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', 'E', 'M', '1303', 'y', 'H']

Answer: 1303


Question: ['I', 'n', '3069', '477', 'F', 'k', '847', '6777', 'N', 'X', 'F', '1417', '9445', 'o', 'v', 'd', '2169', 'w']

Answer: 24201


Question: ['S', 'Z', '2869', '2171', '197', 'Y', '81', 'I', 'u', '6567', 'g', '6883']

Answer:
18768