I want to know the answer to the following question:
What positive integer is used to divide the sum of two positive integers in modular mathematics?
All the background I'm provided with is that "For any modulus, n, the set of integers from 0 to n − 1 forms a group under modular addition: the inverse of any element a is n − a, and 0 is the identity element.". Is that enough to answer the question?