Mathematics
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    909720000×1/9
    600000×1.5×(25-0)+6000000×4×(25-0)
    1125000×1.5×(25-0)+11250000×4×(25-0)
    909720000+909720000-146250000
    3354000000+372666667-82500000
    6288750000+698750000-1167187500
    3354000000×1/9
    300000×1.5×(80-0)+2700000×3×(80-0)+270000×836
    600000×1.5×(80-0)+6000000×4×(80-0)+600000×2270
    1125000×1.5×(80-0)+11250000×4×(80-0)+1125000×2270
    300000×1.5×(25-0)+2160000×2.5×(25-0)
    600000×1.5×(25-0)+6000000×4×(25-0)
    (100000+1)*100000/2
    !(100000)
    1125000×1.5×(25-0)+11250000×4×(25-0)
    tan45
    arctan1.25+arctan0.75
    arctan1.25+arctan0.75
    log(1919810,114514)
    arctan0.5

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