Mathematics
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    289.8÷0.8
    386.4×0.75
    0.8×(230+150+44+3+11+34+11)
    55.8÷(√3×0.38)
    47.43÷0.85
    76.5×0.62
    tan(arccos0.85 )
    90×0.85
    78÷(√3×0.38)
    354÷(√3×0.38)
    54÷(√3×0.38)
    78÷(√3×0.38)
    283.2÷0.8
    tan(arccos0.8 )
    377.6×0.75
    0.8×(230+150+44+3+11+34)
    78/√3/220
    62.4/0.8
    62.4×0.75
    tan(arccos0.8 )

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