Найдите значение выражения
3^18*m^60*n^18*5^15*m^245*n^270) / (2^9*3^18*m^180*n^153*5^10*m^65*n^75) = m^60*n^60*5^5/2^9 = (m*n)^60*5^5/2^9 = (1,5*(-2/3))^60*5^5/2^9 = 5^5/2^9 = 3125/512