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: 22, 25, ['681', '2393', 'f', 'g', '5051', '5839', 'T', 'p', '8057', '6929', 'N', '1519', 'G', '8969', '8589', 'T', 't', '4915', 'r', 'M', 'N', '8285', '8607', '4333', '7457', '343', 'f', 'r']

SOLUTION: 28682

PROBLEM: 11, 13, ['L', 'v', 'o', '8089', 'u', '7105', '4451', '9785', 'e', 'p', 'p', '7077', '2815', 'v', 'p', '3593', 't', '6771', 'd', '2651']

SOLUTION: 9892

PROBLEM: 3, 4, ['3077', '7961', 'j', 'h', '5455', '4659']

SOLUTION:
0