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: ['3629', '8785', '9537', '8479', '3523', 'c', 'C', '5093', '2405', 'y', '1145', '8987', 'f']

Output: 51583


Input: Consider Input: ['2087', '8171', 'c', 'd', 'a', '5621', 'n']

Output: 15879


Input: Consider Input: ['5273', 'f', 'y', 'e', 'b', '6549', '401', 'E', 'Q', 'T']


Output: 12223