1. \[240 : 3 + 7 \times 2 = 80 + 14 = 94\]
2. \[240 : (3 + 7) \times 2 = 240 : 10 \times 2 = 24 \times 2 = 48\]
3. \[640 : 8 - 4 \times 5 = 80 - 20 = 60\]
4. \[640 : (8 - 4) \times 5 = 640 : 4 \times 5 = 160 \times 5 = 800\]
5. \[0.28 : 4 = 0.07\]
6. \[1.28 : 4 = 0.32\]
Ответ: 94, 48, 60, 800, 0.07, 0.32