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: ['3895', 's', 'j', '7755', 'H', '7941', '4903', 's', '3629', '1183', '1001', '5569', 'q', '4735']

SOLUTION: 40611

PROBLEM: ['6815', 'A', '1055', '4687', '8675', '4615', 'a', '2127', 'w', 'l', 'J', '5025', 'c', 't', '9727', 'G', '8431']

SOLUTION: 51157

PROBLEM: ['7803', '3021', '271', '8997', 'F', '421', 'c', 'l', 'H', '6397', 'p', '3309', '7235', 'N', 'M']

SOLUTION:
37454