code: add division

main.cpp

@@ -9,5 +9,6 @@ int main()
     cin >> a >> b;
     cout << "A + B = " << a + b << '\n'
          << "A - B = " << a - b << '\n'
-         << "A * B = " << a * b << '\n';
+         << "A * B = " << a * b << '\n'
+         << "A / B = " << a / b << '\n';
 }