Mathematics
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    840*0.3
    360*0.2
    5/0.5
    20/40%
    e3
    37+3/22
    44-22*(-1/3)-7
    44-22* (-3/1)-7
    73260.07+83859.97+92153.82+126584.91+128800.28-250000
    5×[(32 -26 )²+(32-19)²+(26-32)²+(26-19)²+(26-18)²+(26-17)²+(19-32)²+(19-26)²+(19-17)²+(19-14)²+(18-26)²+(18-17)²+(17-26)²+(17-19)²+(17-18)²+(17-14)²+(14-19)²+(14-17)²]
    5×[(32 -26 )²+(32-19)²+(26-32)²+(26-19)²+(26-18)²+(26-17)²+(19-32)²+(19-26)²+(19-17)²(19-14)²+(18-26)²+(18-17)²+(17-26)²+(17-19)²+(17-18)²+(17-14)²+(14-19)²+(14-17)²]
    5×[(32 -26 )²+(32-19)²+(26-32)²+(26-19)²+(26-18)²+(26-17)²+(19-32)²+(19-26)²+(19-17)²(19-14)²+(18-26)²+(18-17)²+(17-26)²+(17-19)²+(17-18)²+(17-14)²+(14-19)²+(14-17)²]
    5×[(32 -26 )²+(32-19)²+(26-32)²+(26-19)²+(26-18)²+(26-17)²+(19-32)²+(19-26)²+(19-14)²+(18-26)²+(18-17)²+(17-26)²+(17-18)²+(17-14)²+(14-19)²+(14-17)²]=
    7.42|53178*5.2|3865428
    73*1369863
    lnA(C(4,2),C(6,3))
    lnA(C(6,3),C(8,4))
    lnA(C(9,5),C(11,6))
    arctan4
    arctan0.1

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