Mathematics
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    365:585
    35.5+23
    0.146*10
    169400:1210
    142296:0.84
    77*4.2*1000*0.44
    sin68
    arccos0.37
    sin27
    arccos0.89
    3052*1.55*1.5+2500*1.55*1.5
    (1383+1200)*1.7/0.5*1.35
    (2351+1200)/0.5*1.35
     (1500+1200)*3*1.4/1.7
    180-38.604041-51.395977
    arctan(10.148061÷12.710425)=
    arctan(12.710425÷10.148061)
    arctan(10.148061÷12.710425)=
    arctan(10.148061÷12.710425)=
    tan(arccos 0.88)-tan(arccos 0.92)

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