Упростите выражение (2m^5n^4) ^7 * (4m^3n^5) ^2 : (2m^4n^4) ^10

(2 * m^5 * n^4) ^7 * (4 * m^3 * n^5) ^2 : (2 * m^4 * n^4) ^10 = (2^7 * m^ (5 * 7) * n^ (4 * 7) * 4^2 * m^ (3 * 2) * n^ (5 * 2)) : (2^10 * m^ (4 * 10) * n^ (4 * 10)) = (2^7 * m^35 * n^28 * 4^2 * m^6 * n^10) : (2^10 * m^40 * n^40) = (2^ (7 + 4) * m^ (35 + 6) * n^ (28 + 10)) : (2^10 * m^40 * n^40) = 2^ (11 - 10) * m^ (41 - 40) * n^ (38 - 40) = 2 * m * n^ (-2) = 2 * m/n^2;

Ответ: 2 * m/n^2.