TASK DEFINITION: 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.
PROBLEM: ['2683', '4431']

SOLUTION: 7114

PROBLEM: ['h', '1157', 'm', '8975', '6165', '7491', '1855', '3489', '9629', '631', '9641']

SOLUTION: 49033

PROBLEM: ['311', 'O', '6907', 'q', '3189', 'k', 's', 'g', '7307', '1173', '7223', '5085', 'v', '5951', 'D', 'p']

SOLUTION:
37146