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', '8317', '8989']

Output: 17306


Input: Consider Input: ['t', 'x', '5629', 'k', '2003', 'v', '541', 'l', 'v', '7983', '677', '6173', 'z', 'J', 's', 'u', '2187', 'Y']

Output: 25193


Input: Consider Input: ['m', '5459', 'E', 'V', '4625', 'R', '6649', 'l', '5111', '4873', '6351', '9467', '9245', '1509', 'b', '8913', '5647', '9405', '9335']


Output: 86589