Ответ:

а) \(\frac{\left(1\frac13\right)^2\cdot0.5^3}{\left(\frac29\right)^2}=\frac{\left(\frac43\right)^2\cdot\frac18}{\frac4{81}}=\frac{16}{9}\cdot\frac18\cdot\frac{81}4=9\).

б) \(\frac{\left(4\frac12\right)^3\cdot1.8^2}{\left(1\frac45\right)^3}=\frac{\left(\frac92\right)^3\cdot\left(\frac95\right)^2}{\left(\frac95\right)^3}=\left(\frac92\right)^3\cdot\frac59=\frac{405}{8}=50.625\).

Ответ: а) 9; б) 50,625.