计算：2011.327×2010.328-2011.328×2010.327=_．

2011.327×2010.328-2011.328×2010.327
=2011.327×（2010.327+0.001）-（2011.327+0.001）×2010.327
=2011.327×2010.327+2011.327×0.001-2011.327×2010.327-0.001×2010.327
=2011.327×2010.327-2011.327×2010.327+2011.327×0.001-0.001×2010.327
=2.011327-2.010327
=0.001．
故答案为：0.001．