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, 9, ['8047', 'Q', 'A', '2811', '8953', 'P', '4515', 'f', 'K', 'u', 'g', 'R', 'p', '667', '8703', '2903', '6299', '417', '3317', 'O', 'z', '3507', '8969', '6193', '2549']

SOLUTION: 4515

PROBLEM: 11, 18, ['7053', '4271', '3175', '3997', '4153', '3255', 'd', '4507', 'q', 'm', 'V', '9999', 'Q', 'v', '8543', '2835', '1545', '3549']

SOLUTION: 26471

PROBLEM: 8, 15, ['3451', '893', '2535', '1017', 'Z', '181', '5357', 'x', '8961', '9569', '5405', 'V', 'I', 'U', '8189', 'P', 'U', '327', '2375', 'Q', '6349', 'Z']

SOLUTION:
32124