Ответ:\(3^4(3^2)^3:3^7=3^{4+6-7}=3^3=27\).\(0{,}2^7\cdot5^7=(0{,}2\cdot5)^7=1^7=1\).\(9^5:3^9=(3^2)^5:3^9=3^{10-9}=3\).\(\dfrac{10^{11}}{2^5\cdot5^5}=\dfrac{10^{11}}{(2\cdot5)^5}=10^{11-5}=10^6=1\,000\,000\).