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: ['f', 'N', '8597', 't', 'K', '9755', 'j', '9747', '7259', '5493', 'n', '7269', '8493', '2279', '5369', 'f']

Output: 64261


Input: Consider Input: ['d', '4553']

Output: 4553


Input: Consider Input: ['2365', 'r', '6995', 'V', '1777', '6913', '8871', '2729', '2143']


Output: 31793