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: ['5021', 'q', '4109', 'g', 'w', 'C', 'w', '239', 'N', '9755', '8591', '7083', 'Q', '7907', 'w', 'U', 'a', '4901', 'k', 'G']

Output: 47606


Input: Consider Input: ['b', 's', 'v', '4757', '9063', 'I', '8397', '7975', 'Q']

Output: 30192


Input: Consider Input: ['273', 'o', '6037', 'P', 'K', 'k', 'P', '4091', '4913', '3', 'f', 't', '8681', 'A']


Output: 23998