【(16又8/247*2.375+12又4/285*4.75)*19.98】/6.66*(48*2-167/195)

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【(16又8/247*2.375+12又4/285*4.75)*19.98】/6.66*(48*2-167/195)【(16又8/247*2.375+12又4/285*4.75)*19.98】/6.6

【(16又8/247*2.375+12又4/285*4.75)*19.98】/6.66*(48*2-167/195)
【(16又8/247*2.375+12又4/285*4.75)*19.98】/6.66*(48*2-167/195)

【(16又8/247*2.375+12又4/285*4.75)*19.98】/6.66*(48*2-167/195)
【(16又8/247*2.375+12又4/285*4.75)*19.98】/【6.66*(48*2-167/195)】
=【(16*2.375+8/247*2.375+12*4.72+4/285*4.75)】*19.98/6.66/(48*2-167/195)
=【(38+1/13+57+1/15)】*3*(48*2-167/195)
=【95+28/195】*3*(95+28/195)
=3