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: ['1305', '1673', 'w']

SOLUTION: 2978

PROBLEM: ['m', '3481']

SOLUTION: 3481

PROBLEM: ['2643', '3041', 'a', '9313', 'Y', 'g', '5099', 'C', '3151', 'v', '9163', '2827', '3885']

SOLUTION:
39122