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: ['q', 'N', 'y', '7859', 'u', '2861', '4151', 'Q', 'x']

Output: 14871

Input: Consider Input: ['29', 'N', '5061', '7191', 'z', '8367']

Output: 20648

Input: Consider Input: ['5023', '7017', 'j', '5819', 'k', 'j', '3259', 'K', '6353', 'h', 'o', 'z', 'i', 'k']
Output: 27471