Elementary operations

Given two integers, write a method that returns results of their elementary arithmetic operations: addition, substraction, multiplication, division. Remember that you can't divide any number by 0!
Expected input and output
ElementaryOperations(3, 8) → 11, -5, 24, 0.375
using System;

namespace CSharpExercises.Exercises.Basics
{
    class ElementaryOperationsTask
    {
        public static string ElementaryOperations(int a, int b)
        {
            int addition = a + b;
            int substraction = a - b;
            int multiplication = a * b;
            double division;

            if (b != 0)
            {
                division = a / (double)b;
            }
            else // assume that division by 0 returns 0
            {
                division = 0;
            }

            return String.Format($"a + b = {addition}, a - b = {substraction}, a * b = {multiplication}, a / b = {division}");
        }

        public static void Main()
        {
            Console.WriteLine(ElementaryOperations(36, 15));   // a + b = 51, a - b = 21, a * b = 540, a / b = 2.4
            Console.WriteLine(ElementaryOperations(-375, 25)); // a + b = -350, a - b = -400, a * b = -9375, a / b = -15
        }
    }
}