Mathematics
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    4-3(100-82)²/1600
    4-3(100-95)²/1600
    4-3(100-85)²/1600
    4-3(100-78)²/1600
    4-3(100-72)²/1600
    4-3(100-67)²/1600
    tan60
    1/tan30
    tan30
    180*50/3.1415926/6.456
    180*50/3.1415926/5.044
    1/128*128
    1/15*15
    1/15*15
    1/14*14
    1/13*13
    1/6*2
    1/12*12
    1/11*11
    1/6*6

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