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: ['o', '7099', 'G', 'v', 'H', 'J', 'k', '1607', 'i', '9765', '2489', '8031']

Output: 28991


Input: Consider Input: ['P', '6161', 'k', '5925', 'h', 'G', 'n']

Output: 12086


Input: Consider Input: ['5943', '7045', 'h', 'p', '5121', '7973', 'R', '5983', '9165', '4303']


Output: 45533