687.53*1.2+（1458+622.4）*1.4
    917.8*1.2+（19.46+768.4）*1.4
    687.53*1.2+（30.98+841.8）*1.4
    917.8*1.2+（41.35+1039.38）*1.4
    657.1*1.2+（46.58+843.85）*1.4
    877.11*1.2+（62.18+1041.8）*1.4
    0.4*1.343*(7.875*43.25+234.4*3.49)
    0.5423*1.343*(7.875*43.25+234.4*3.49)
    0.541*1.343*(7.875*43.25+234.4*3.49)
    0.4*1.343*(7.875*43.25+234.4*4.65)
    0.5423*1.343*(7.875*43.25+234.4*4.65)
    0.541*1.343*(7.875*43.25+234.4*4.65)
    0.4*1.1343*(7.875*43.25+234.4*4.65)
    0.541*1.1343*(7.875*43.25+234.4*4.65)
    0.5423*1.1343*(7.875*32.4+234.4*3.49)
    0.5423*1.1343*(7.875*43.25+234.4*4.65)
    0.0993997/0.06781805245
    e2+3e+70
    6-4*e^0.5
    1/3*3*（140+60sqrt(140*60))

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