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: ['3451', '2325', '2511', 'i', '6159', '2291', 'e', 'l', 'P', '1177', 'o', 'T']

Output: 17914


Input: Consider Input: ['5289', '1701', '5925', '7973', 'F', 'V', 'y', '5903', 'i']

Output: 26791


Input: Consider Input: ['C', '7791', '6143', '4359', 'n']


Output: 18293