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: ['9201', '5685', 'v', 'w', 'v', 'r', 'Y', 'm', 'q', 'e', 'P', '7595', 'c', 'W', 'd', '9985', 'V', '3719']

SOLUTION: 36185

PROBLEM: ['5573', '6221', 'C', '8649', '6603', 'q', '9403']

SOLUTION: 36449

PROBLEM: ['T', 'L', '6597', '2807', '1445', '6181', 'M', 'u', 'A', 'd', '571', 'U', '3931', 'W', '4547', '6733', 'u', '4463', 'q']

SOLUTION:
37275