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: ['x', '1887', 'E', '3995', '5677', '2749', '9951']

Output: 24259


Input: Consider Input: ['X', 'u', 'B', '269', '9089', 'M', '5175', 'K']

Output: 14533


Input: Consider Input: ['T', '2747', 'H']


Output: 2747