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: ['2013', 'S', 's', '9353', 'b', 'u', '6687', '5429', '3545', '7269']

Output: 34296


Input: Consider Input: ['d', 'b', 'W', '3201', 'C', 'o', '5187', '9723', '8177', 'F', '6703', 'U', '1393', '1035', '3507', '5993', '3857', 'r', 'C', 'j']

Output: 48776


Input: Consider Input: ['8245', '515', 'A', '2743', 'N', '9101', '7319', 'M', '4771', 'y', 't', '5297', 'F', 't', 'w', '513', 'M']


Output: 38504