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: ['2417', '6671']

SOLUTION: 9088

PROBLEM: ['83', 'k', 'p', 'o', 'b', '7819', '2089', '4141', 'c', 's', '6045', '6783', 'J', 'B', 'x', 'O', 'X', '9693']

SOLUTION: 36653

PROBLEM: ['6591', '9665', 'J', '8073', '437', 'l', '8527', 'f', 'S']

SOLUTION:
33293