计算. 2008÷20082008/2009.

问题描述:

计算.
2008÷2008

2008
2009

2008÷2008

2008
2009

=2008÷
2008×2009+2008
2009

=2008÷
2008×(2009+1)
2009

=2008×
2009
2008×2010

=
2009
2010