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: 6, 13, ['x', '8293', 'W', 'O', '511', 'y', '9801', '7925', '3353', 'J', 'D', 'J', 'B', '2559', 'j']

SOLUTION: 21079

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: 1, 18, ['f', 's', '7701', 'b', 'd', '5919', '8377', '6351', '6319', '7673', '7713', '7233', '87', '6393', '6755', '2007', 'p', 'J', '373', 'l', '7619', 'i', '4017']

SOLUTION:
72528