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
    8266914648*2
    2022^3
    2022*2022*2022
    2021^3
    2020^3
    （30+10）/10
    20+10/20
    76.92* 92169621.93^0.55+81 76.92* 94723653.1^0.55+81 76.92* 121546944.77^0.55+81 76.92* 117376104.99^0.55+81 76.92* 144436709.88^0.55+81 76.92* 153881522.59^0.55+81 76.92* 165428959.34^0.55+81
    76.92*94723653.10^0.55+81
    76.92* 4598650^0.55+81

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