123456......*9+n=n个1(1234*9+5=11111 12345*9+6=111111 123456*9+7=1111111)
9876......*9+n=(9-n)个8 (9876*9+4=88888 98765*9+3=888888 987654*9+2=8888888)
1234*9+5=11111
12345*9+6=111111
123456*9+7=1111111
9876*9+4=88888
98765*9+3=888888
987654*9+2=8888888
照样子写下去:1234×9+5=11111,123456×9+6=111111,1234567×9+7=1111111
9876×9+4=88888,98765×9+3=888888,987654×9+2=8888888
1234*9+5=11111……9876*9+4=88888……
(8*8 8*8)*8-8-8-8=1000