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: ['s', 'd', 't', '8235', '2279', '7477', '3029', '4377', '9153', '4309', '2295', '407']

Output: 41561


Input: Consider Input: ['g', 'A', 'm', '4005', '8079', 'G']

Output: 12084


Input: Consider Input: ['f', '6957', 'M', 'i', 'P', '3657', 'S', '5961']


Output: 16575