原式=[5/3-(24×5/8-24×1/6+24×7/12)]×(-1/5)
=[5/3-(15-4+14)]×(-1/5)
=(5/3-25)×(-1/5)
=5/3×(-1/5)-25×(-1/5)
=-1/3+5
=5-1/3
=14/3