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: ['7379', 'I', '2031', '8419', 'w', 'b', '9827', 'X', 'Y', 't', '3789', 'B', 'c', '6599', 'F', '6169', 'V']

SOLUTION: 44213

PROBLEM: ['95', '279', 'y', 'p', '5083', 'X', 'E', '3817']

SOLUTION: 9274

PROBLEM: ['871', 'c', 'L', '6823', '2825', '5739', '689', '6419', 'c', 'C', '7695', '779', 'd']

SOLUTION:
31840