Mathematics
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    tan125.4tan37.8
    tan110.5tan32.3
    tan(110.5)tan(32.3)
    6000-3000
    500*0.25+10*0.75
    1000*0.05+1*0.95
    -50000*0.2+40000*0.35
    1*(20/30)+5*(4/30)+10*(3/30)+20*(2/30)+100*(1/30)
    230*0.3+240*0.2+250*0.15+260*0.15+27+280*0.05+290*0.05
    (165000/1.12+165000/1.12^2)/225000
    (165000/1.2+165000/1.2^2)/225000
    1/1.726776
    1.264/0.732
    2-0.736*2
    1-5.018+1.838
    1.838*2-2
    1.82+0.018
    6.036-1.018
    2-0.036-0.144
    0.018*8

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