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: ['R', '3361', 'c', 'S', 'g', '3829', '7347', '6633', 'e', '9227']

SOLUTION: 30397

PROBLEM: ['1147', 'f']

SOLUTION: 1147

PROBLEM: ['6293', 'p', '9755', '8181', 'b', '3651', '2909', '5963', 'J', '4517']

SOLUTION:
41269