г) $$\frac{16^6}{4^7 \cdot 64} = \frac{(4^2)^6}{4^7 \cdot 4^3} = \frac{4^{2 \cdot 6}}{4^{7+3}} = \frac{4^{12}}{4^{10}} = 4^{12-10} = 4^2 = 16$$
Ответ: 16