a) 64
б) 8
в) 16
г) 0,25
д) 216
е) $$\frac{25}{36}$$
ж) $$1\frac{9}{16}$$
$$\frac{125 \cdot 5^4 \cdot 5^{-4} \cdot (5^3)^4}{25^{-4} \div (5^5)^4} = \frac{5^3 \cdot 5^4 \cdot 5^{-4} \cdot 5^{12}}{5^{-8} \div 5^{20}} = \frac{5^{3+4-4+12}}{5^{-8-20}} = \frac{5^{15}}{5^{-28}} = 5^{15+28} = 5^{43}$$