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

SOLUTION: 26303

PROBLEM: ['B', 'K', '9399', 't', '5541', 'w', '1939', '7841', 'q']

SOLUTION: 24720

PROBLEM: ['i', 'b', '9441', 'M', 'z', '1545', '2011', '2413', '6537', '2371', 'F', '7827', '7043', 'o', '381', '6099']

SOLUTION:
45668