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: 2, 2, ['M', 'I', 'G', '3747']

SOLUTION: 0

PROBLEM: 1, 3, ['p', '5665', '3001']

SOLUTION: 8666

PROBLEM: 16, 27, ['5205', '2803', '133', 'f', '4903', 'y', 'T', '8023', 'I', '3055', '7507', '3781', '4827', 'I', '6813', '2111', '2147', '1291', 't', '7075', '3299', '171', 'H', '9677', '2013', 'F', 'p', '1475', '2621', '3629']

SOLUTION:
27784