24点6 8 9 9怎么算

中括号打不出来.
1:8 ÷ 6 ×(9 + 9)
2:(8 ÷ 6) × (9 + 9)
3:8 ÷ (6 ÷ (9 + 9))
4:(8 ÷ (9 - 6)) × 9
5:8 ÷ (9 - 6) × 9
6:8 ÷ ((9 - 6) ÷ 9)
7:(8 × (9 + 9)) ÷ 6
8:8 × (9 + 9) ÷ 6
9:8 × ((9 + 9) ÷ 6)
10:8 × (9 ÷ (9 - 6))
11:8 × 9 ÷(9 - 6)
12:(8 × 9) ÷ (9 - 6)
13:9 × (8 ÷ (9 - 6))
14:9 × 8 ÷(9 - 6)
15:(9 × 8) ÷ (9 - 6)
16:(9 + 9) ÷ 6 × 8
17:((9 + 9) ÷ 6) × 8
18:(9 + 9) ÷ (6 ÷ 8)
19:(9 ÷ (9 - 6)) × 8
20:9 ÷ (9 - 6) × 8
21:9 ÷ ((9 - 6) ÷ 8)
22:(9 + 9) × 8 ÷ 6
23:((9 + 9) × 8) ÷ 6
24:(9 + 9) × (8 ÷ 6)
可以了吗?
24种答案我想可以了吧!