123456789x9..................

123456789x9/18/27/36 /45/54/63/72/81/90=?
分別是:
=1 111 111 101

=2 222 222 202
=3 333 333 303
=4 444 444 404
=5 555 555 505
=6 666 666 606
=7 777 777 707
=8 888 888 808
=9 999 999 909
=11 111 111 010


圖片參考：http://hk.yimg.com/i/icon/16/1.gif


2008-01-06 14:23:49 補充：
若以上的 / 是除號，則=7.9033618956511689735202857143086e -7

=1 111 111 101
=2 222 222 202
=3 333 333 303
=4 444 444 404
=5 555 555 505
=6 666 666 606
=7 777 777 707
=8 888 888 808
=9 999 999 909
=11 111 111 010

7.9033618956511689735202857143086e-7

123456789x9=1111111101
123456789x18=2222222202
123456789x27=3333333303
123456789x34=4444444404
123456789x45=5555555505
123456789x54=6666666606
123456789x63=7777777707
123456789x72=8888888808
123456789x81=9999999909
123456789x90=11111111010

=7.903361896 -07次方