54 ÷ 6 = 9.
42 ÷ 6 = 7.
36 ÷ 9 = 4.
40 ÷ 8 = 5.
( 52 - 31 ) ÷ 3 = 21 ÷ 3 = 7.
54 ÷ ( 16 - 7 ) = 54 ÷ 9 = 6.
( 12 + 18) ÷ 6 = 30 ÷ 6 = 5.
35 ÷ ( 30 - 23 ) = 35 ÷ 7 = 5.
9 ÷ 3 = 3.
16 ÷ 4 = 4.
25 ÷ 5 = 5.
36 ÷ 6 = 6.
6 × 5 ÷ 10 = 30 ÷ 10 = 3.
3 × 8 ÷ 6 = 24 ÷ 6 = 4.
5 × 7 ÷ 5 = 35 ÷ 5 = 7.
5 × 4 ÷ 10 = 20 ÷ 10 = 2.
Удачи)))