Ответ:

  1. \(7^7:7^5=7^{7-5}=7^2=49\).
  2. \(10^{18}:10^{14}=10^4=10000\).
  3. \(0{,}6^9:0{,}6^6=0{,}6^3=0{,}216\).
  4. \(\left(-1\frac18\right)^5:\left(-1\frac18\right)^3=\left(-1\frac18\right)^2=\left(-\frac98\right)^2=\frac{81}{64}=1\frac{17}{64}\).

Ответ: 1) 49; 2) 10000; 3) 0,216; 4) \(1\frac{17}{64}\).