Mathematics
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     √5625√15625
    1/(3.1415926*(1+0.05^2))
    1+0.454*0.05^1.669
    1+16.491932*0.05^1.070969
    1+16.491932*0.05^1.070969
     999999000/504
    984126*504
     1984126*504
     396825*252
     47458321/83/83/83/83
     (√5625)+(√15625)
     √5625
    844/3
    90-arctan(0.25×0.467)-arctan(4*0.467)
    90-arctan(0.25×0.46)-arctan(4*0.46)
    π÷2-arctan(0.25×0.46)-arctan(4*0.46)
     arccos0.356
     arccos0.356
    cos(-4π/11)
    √114514

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