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: ['2729', 'W', 'i', '9073', '343', 'j', '2329', '9159', '4825']

Output: 28458


Input: Consider Input: ['7597', '8605', 'j', 'x', 'E', '1969', '537', '3839', 's', 'i', '6351', 'w']


Output: 28898