Mathematics
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    1/2*(1/3-1/15)=
    1/2*(1/3-1/(3+2))=
    1/2(1/3-1/3+2)=
    1/(3*5)+1/(13*15)=
    6+4/3
    (1+0.41%)^5.28
    -6-5/3
    5/3-6
    -6*4/3-4
    arcsin0.685
    cos(1/e)
     200000÷ 65=
    arctan7
    1/6-2/15+1/10
    108721624850657/2906161
    3370370370370367/31
    37074074074074037/11
    111222222222222111/3
    1011121222222221211101/9091
    1011121222222221211101/3541

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