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: ['4089', '2385', 'E', 'K', '259', '295', '6649', '8645', 'n', '2577', '2683', '9041', 'Q', 'm', '4237']

SOLUTION: 40860

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

SOLUTION: 9274

PROBLEM: ['7367', '7967', '8081', 'D', 'V', 'l', '7979', 'v', '1373', '9279', 'l', 'p']

SOLUTION:
42046