18) 2⁴ * (2²)³ / 2⁹

2⁴ * (2²)³ / 2⁹ = 2⁴ * 2^(2*3) / 2⁹ = 2⁴ * 2⁶ / 2⁹ = 2^(4+6) / 2⁹ = 2^10 / 2⁹ = 2^(10-9) = 2¹ = 2

Ответ: 2