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: ['t', 'Q', '5189', 'g', 'c', '4685', '5309', 'W', '6729', '2843']

Output: 24755


Input: Consider Input: ['r', '3537', 'T', '3611', 'k', '4983', 'h', '4317', '8727', 'E', '6471', '8465', 'f', '5429', 'T', '2169', '2171', 'P', '6941', 'D']

Output: 56821


Input: Consider Input: ['3899', 'S', '7665', '7517', 'p', 'm', '8815', 'A', 'I', '959', '727', '6059', '2159', '8627', 'y', '1663']


Output: 48090