1) $$\frac{5}{12} \cdot 180 = \frac{5 \cdot 180}{12} = \frac{5 \cdot 15}{1} = 75$$
2) $$28 \% \cdot 200 = \frac{28}{100} \cdot 200 = 28 \cdot 2 = 56$$
Ответ: 1) 75; 2) 56