Tính: 45^10 . 5^10/75^10

$$\begin{gathered} \mathrm{Câu} 1: \mathrm{Tính} \\ \frac{{45}^{10}. 5^{10}}{{75}^{10}} \\ \mathrm{aii} \mathrm{nhanh} 5\mathrm{đ}😇 \end{gathered}$$