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: 16, 23, ['g', 'p', '7457', 'l', 'a', 'a', 'C', '6307', 'G', '5453', '1165', 'W', '6419', 's', '9445', 'y', 'Y', 'F', '9703', '4049', 'Y', '7173', 's', '7925', 'Z', '4413', 'd', '649']

SOLUTION: 20925

PROBLEM: 1, 11, ['q', 'q', 'P', '4335', 'l', 'k', 'D', 'R', '719', 'g', '855', 'l', '6639', '7935', '8407', 'A', 'H', '8357', '759', 'i', '1205', 'B', 'Q', 'V', '359', '4565', '9975', 'g', 'h', '9585']

SOLUTION: 5909

PROBLEM: 4, 4, ['3617', '5235', 'i', '2829', 'v']

SOLUTION:
2829