1:(6 ÷ 3 + 6) × 3
2:((6 ÷ 3) + 6) × 3
3:(6 + 6 ÷ 3) × 3
4:(6 + (6 ÷ 3)) × 3
5:3 × (6 + 6 ÷ 3)
6:3 × (6 + (6 ÷ 3))
7:3 × (6 ÷ 3 + 6)
8:3 × ((6 ÷ 3) + 6)