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.

Input: Consider Input: ['2765', '6767', '7645']

Output: 17177


Input: Consider Input: ['T', 'n', '8513', '5565', '6343', '1403', '975', '6959', '8049', '1601', 'j', 'Q', 'O', '7889', 'r', 'D', '1903', '6607']

Output: 55807


Input: Consider Input: ['t', '485', 'x', '4899', 'd', 'J', '3517', '2093', 'W', '851', 'u', 's', '9221', 'W', '7923', '4031', '6189', '8819']


Output: 48028