Mathematics
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    0.8×(230+150+44+3+11+34+11)
    62.4÷0.8
    0.8×(8+20+50)
    74.11÷(√3×0.38)
    63÷0.85
    63×0.62
    tan(arccos0.8 )
    tan(arccos0.85)
    tan(arccos0.8 )
    90×0.7
    28.9÷0.85
    90÷(√3×0.38)
    76.5÷0.85
    483÷(√3×0.38)
    386.4÷0.8
    tan(arccos0.6 )
    47.43÷0.85
    7.43÷0.85
    230+150+44+3+11+34+11
    263.49÷(√3×0.38)

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