Modulo is calculated before adding, so as first you need to calc 6 % 3, result is 0.
int index = 1 + 0 = 1;
Indexes in arrays starts from 0, ends in length - 1. So first element in the array has 0 as index, second element has 1 as idnex, etc. Your index = 1, so value of the second element in the grades will be your result. Finally, the answer is 92.
