Ответ:
1) \(0{,}56\cdot\frac{3}{8}=\frac{56}{100}\cdot\frac{3}{8}=\frac{21}{100}=0{,}21\).
2) \(2\frac{1}{9}\cdot1{,}8=\frac{19}{9}\cdot\frac{9}{5}=\frac{19}{5}=3{,}8\).
3) \(2{,}448:\frac{8}{9}=2{,}448\cdot\frac{9}{8}=2{,}754\).
4) \(8{,}4:1\frac{1}{6}=8{,}4:\frac{7}{6}=8{,}4\cdot\frac{6}{7}=7{,}2\).
Ответ: 1) 0,21; 2) 3,8; 3) 2,754; 4) 7,2.
