3.14/2又15/16*5.875-(21又5/37-19.18)
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3.14/2又15/16*5.875-(21又5/37-19.18)3.14/2又15/16*5.875-(21又5/37-19.18)3.14/2又15/16*5.875-(21又5/37-19.1
3.14/2又15/16*5.875-(21又5/37-19.18)
3.14/2又15/16*5.875-(21又5/37-19.18)
3.14/2又15/16*5.875-(21又5/37-19.18)
原式=3.14/（47/16）*（47/8）-782/37+19.18
=3.14*（16/47）*（47/8）-782/37+19.18
=1.57+19.18-782/37
=20.75-782/37
=-14.25/37