=[(8/3+3/2)除以5/6-17/5]除以14/5
=[(16/6+9/6)除以5/6-17/5]除以14/5
=[25/6*6/5-17/5]除以14/5
=[5-17/5]除以14/5
=8/5除以14/5
=8/5*5/14
=8/14