TASK DEFINITION: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to return the sum of all the numerical elements in the list A between the positions i and j (including positions i and j). Return 0 if no numerical element is present in the list between the given ranges. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
PROBLEM: 7, 19, ['6719', 'c', 'S', '3259', '1287', 'u', '9251', '2183', '4821', '9449', 'I', 'P', 'i', '7597', '8141', 'G', 'j', '8587', '7245', 'G', 'O', 'o', '9479']

SOLUTION: 57274

PROBLEM: 6, 7, ['6261', 'l', 'T', 't', 'X', 'G', 'Y', 'f']

SOLUTION: 0

PROBLEM: 13, 15, ['6793', '5033', '4125', '5493', 'w', '9695', 'd', 'G', '8353', '4119', 'M', 'r', 'T', 'V', 'J', 'b', 'v', '1547', '2141', '2927', '5593', '4481', '3221', '1513', '6239', '7533', '6785', '561', '2917', '6609']

SOLUTION:
0