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: ['5095', '8235', '4901', 's', '4177', '3077', 'l']

SOLUTION: 25485

PROBLEM: ['M', '9387', '7125', 'c', '1295', 'X', 'l', '9867']

SOLUTION: 27674

PROBLEM: ['y', 'i', '6451', 'x', 'd', '7865', 'q', '9649', 'v', 'E', '7337', 'M', '4105', '7191', 'X', 'Q', '7745', '325']

SOLUTION:
50668