1.1/7×9/13÷5/14÷3/13
=1/7×9/13×14/5×13/3
=6/5
2.3/5÷1/4÷6÷14/15
=3/5×4×1/6×15/14
=3/7
3.2/3×[3/4×(17/18-8/9)]
=2/3×3/4×1/18
=1/36
4.2013×2011/2012
=(2012 1)×2011/2012
=2012×2011/2012 1×2011/2012
=2011 2011/2012
=2011又2011/2012
注:“/”为分数线,如1/7读作七分之一.