（300+100）×（0.35+0.15×105/100+0.1×89/85+0.3×118.6/113.4+0.1×113/110）
    （300+100）×（0.35+0.15×105/100+0.1×89/85+0.3×118.6/113.4+0.1×113/110-1）
    50*e^(0.275)-40
    3.1*e^(-0.05)
    100*e^(0.05)
    4.8*e^(-0.05)
    60*e^(0.05)
    30*e^(0.05)
    log(2)10
    (82^2-4*128.6718576257230^2*(sin(3.1415926536/14.625714))^2)^(1/2)
     (82^2-4*128.6718576257230^2*(sin(3.1415926536/25.405464))^2)^(1/2)
    (82^2-4*128^2*(sin(3.1415926536/25.405464))^2)^(1/2)
    cos(35-26)-tan(41.3)/1.2*sin(35-26)
    tan15*sin20
    cos25
    100+580cos35tan10
    580*sin35
    (82^2-4*128^2*(sin(3.1415/27.170500))^2)^(1/2)
    82^2-4*128^2*(sin(3.1415/27.170500))^2
    e^15.66

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