2005 divided by 2005 and 2005 out of 2006

2005 divided by 2005 and 2005 out of 2006

2005 and 2005 / 2006
=（2005×2006）/2006 ÷ (2005×2006 +2005)/2006
=（2005×2006）/ (2005×2006 +2005)
=（2005×2006）/ [2005×(2006 +1)]
=（2005×2006）/ (2005×2007)
=2006/2007
(2006 / 2007)

(2005 + 2005 / 2006) divided by 2005

(2005 + 2005 / 2006) divided by 2005
=2005÷2005+2005/2006 ÷2005
=1+1/2006
=1 and 1 / 2006
Law: the distribution law of multiplication is used

2007 divided by 2006 divided by 2006

2007 divided by 2006 divided by 2006
=(1 / 2007 + 2005) △ 2006 △ 2006
=(2006 / 2006 + 2005) / 2006 / 2006
=(1 + 1 / 2005) △ 2006
=2006 / 2005 / 2006
=1 / 2005

(2005 + 2006 / 2005) divided by 2005

（2005+2005/2006）÷2005
=（2005+2005/2006）×1/2005
=2005×1/2005+2005/2006×1/2005
=1 + 1 / 2006 = 1 and 1 / 2006