- \[\frac{4^6\cdot2^9}{32^4}=\frac{(2^2)^6\cdot2^9}{(2^5)^4}=2^{12+9-20}=2;\]
- \[\left(2\frac23\right)^5\cdot\left(\frac38\right)^6=\left(\frac83\right)^5\cdot\left(\frac38\right)^6=\frac38\cdot\left(\frac38\right)^5=\left(\frac38\right)^6=\frac{729}{262144}.\]
Ответ: 1) \(2\); 2) \(\frac{729}{262144}\).