1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)÷(6÷7)÷(7÷8)÷(8÷9)=1÷ 2 3 ÷ 3 4 ÷ 4 5 ÷ 5 6 ÷ 6 7 ÷ 7 8 ÷ 8 9 =1× 3 2 × 4 3 × 5 4 × 6 5 × 7 6 × 8 7 × 9 8 = 9 2 .故答案为: 9 2 .
1÷23÷34÷45÷56÷67÷78÷89=92