3.555555×5.888888
    2011+201.1+20.11+2.011；362×740+361×260；1×2+2×3+3×4+4×5+5×6+6×7+7×8+8×9；1968×1967+1967×8033
    (3709.82*ln(5.7*202))/(1.2302686*202)
    cos0.68794
    cos0.68717
    cos687.94
    cos39.372014
    arcsin0.634353
    cos(687.17)
    arcsin(0.63494535)
    (3709.82*ln(5.7*92.3649727))/(1.1.3474704*92.3649727)
    234.18×1.25
    129.12×1.25
    874.87×1.25
    25.78×1×1.25
    (1/3(5.3+1.35) ×41.25+1/2(5.3+1.35) ×48.27-1/3×1.35×421.02)/( 5.3+1.35)
    （20×5.7+19.1×5.3）×2.72+2×5.8×1.65
    （20×5.7）×2.72+2×5.8×1.65
    （20×5.7）×2.30+2×41.7×1.52
    2×41.7×1.52

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