sin25.52
    sin25.52
    1+sin25.52/1-sin25.52
    （2000-1500）*80-3000-200-100*80
    abs（-3.854+5）*abs（-3.854+2）^2/5*abs（-3.854-1）
    cos35.239814
    arcsin0.577
    e3 ee
    e1094516
    !(9)
    arccos0.561906
    cos60^2
    2023*2023*0.000001+2013*0.013314-0.455288
    2023*2023*0.000001+2013*0.013314-455288
    2*2023*2023*2023-3*4042*2023*2023+24506645*2023-16509306493
    (20+10)/20
    2020-16484816000 2021-16509310522 2022-16533829296
    2020*2020*3 2021*2021*3 2022*2022*3
    2021*2021 2022*2022
    2020*2020

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