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: ['8755', 'A', '2893', '6703']

Output: 18351


Input: Consider Input: ['o', 'J', 'B', '7765', '7781', '5513', '8721', 'u', '9557', 'C', 'A', '1281', '6565', 'H', '5559', '1695', '7577']

Output: 62014


Input: Consider Input: ['X', '6733', 'e']


Output: 6733