Part 1. 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.
Part 2. Example
3, 7, ['A', '23', '7413', '6933', '3369', '807', 'M', '456']
Answer: 18522
Explanation: Here, the numbers from 3rd to 7th position are '7413', '6933', '3369', and '807', hence their sum (7413+6933+3369+807) is 18522.
Part 3. Exercise
5, 10, ['x', '1383', 't', 'm', 'f', '9645', 'n', '9409', 'h', 'T', '9671', '5541', 'Y', 'x', 'J', 'g', '7497', 'f', '1893']
Answer:
19054