Mathematics
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    arcsin0.5373
    7^2+7^3
    =(1981.5+2000*(1+0.15)+20*30+(1981.5+2000*0.15)*0.15)*1.05
    1/4×4÷1/4×4=
    arcsin(3.1/9.8)
    arcsin(9.8/3.1)
    arctan(1000π)
    arctan(10/7)
    arctan10/7
    arctan3
    ln0.36791
    ln0.366
    ln0.346
    1/3.22
    2*(-1/3)+(-1/3)
    2*(-1/3)+(-1/3)
    cos15
    20lg4
    602.75×[1-1/(1+8.00%)^37.05]
    602.75×[1-1/(1+10.0%)^37.05]

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