是(1/2010+1/20102010+1/201020102010)/(1/2009+1/20092009+1/200920092009)=?
提出1/2010 和1/2009后,
1/2010(1+1/10001+1/100010001)/(1/2009(1+1/10001+1/100010001))=2009/2010
是(1/2010+1/20102010+1/201020102010)/(1/2009+1/20092009+1/200920092009)=?
提出1/2010 和1/2009后,
1/2010(1+1/10001+1/100010001)/(1/2009(1+1/10001+1/100010001))=2009/2010