1÷1.1=0.909090...
2÷1.1=1.8181818...
3÷1.1=2.272727.
规律是2.÷1.1=0.909090...×2
3÷1.1=0.909090...×3
9*7=63
9.9*6.7=66.33
9.99*66.7=666.333
1÷7=0.142857...
2÷7=0.285714.
3÷7=0.428571.
4÷7=0.571428.
5÷7=0.714285.
6÷7=0.857142.
1÷1.1=0.909090...
2÷1.1=1.8181818...
3÷1.1=2.272727.
规律是2.÷1.1=0.909090...×2
3÷1.1=0.909090...×3
9*7=63
9.9*6.7=66.33
9.99*66.7=666.333
1÷7=0.142857...
2÷7=0.285714.
3÷7=0.428571.
4÷7=0.571428.
5÷7=0.714285.
6÷7=0.857142.