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.
7, 18, ['w', '8811', 'm', '8445', '6841', 'p', 't', '5259', '7157', 'f', '4783', 'U', 'j', 'c', 'y', '9183', '9999', 'r', 'B']