10000...(2002个0)*8888...(2003个8)-8888...(2003个8)
=8888...(2003个8)000..(2002个0)-8888...(2003个8)
=8888...(2001个8)79111111(2001个1)2
各位相加 =9+9+9...(2002个9)+7+2
=9*2003
=18027
10000...(2002个0)*8888...(2003个8)-8888...(2003个8)
=8888...(2003个8)000..(2002个0)-8888...(2003个8)
=8888...(2001个8)79111111(2001个1)2
各位相加 =9+9+9...(2002个9)+7+2
=9*2003
=18027