(2²)⁹⋅8 / 2²⁰ = 2^(2⋅9)⋅2³ / 2²⁰ = 2¹⁸⋅2³ / 2²⁰ = 2^(18+3) / 2²⁰ = 2²¹ / 2²⁰ = 2^(21-20) = 2¹ = 2
Ответ: 2