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: ['7669', '3367', 'A', 'Z', '6173', '4391', 'f', 'S', '9657', '2631']

SOLUTION: 33888

PROBLEM: ['g', 'A', 'm', '4005', '8079', 'G']

SOLUTION: 12084

PROBLEM: ['s', 'q']

SOLUTION:
0