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, 18, ['T', '7117', '7067', 't', '7083', '5711', '6735', 's', '4879', '2553', 'a', 'z', 'Q', '4759', '6243', 'k', 'V', '7803', '2489', 'j', '9449', '8017', '9739', 'F', '1557']
Answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
45766