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: ['o', '445', '2601', 'h', 'V', 'C', 't', 'o', 'H', '3707', '7601']

SOLUTION: 14354

PROBLEM: ['a', 'q', '4085', '6327', '6869', 'Z', 't', '7057', '1965', 'p', 'o']

SOLUTION: 26303

PROBLEM: ['6963', 'w', 'K', '5823', 'Q', 'u', '8347', '9889', 'k', '3731']

SOLUTION:
34753