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: ['z', 'j', 'M', 'E', '1689', '8413', '2603', 'b', '5101', 'w', 'r']

SOLUTION: 17806

PROBLEM: ['w', '4181', 'g', 'j', '1823', 'q', 'i', '709']

SOLUTION: 6713

PROBLEM: ['p', 'd', 'o']

SOLUTION:
0