Mathematics
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     arccos0.7303
    arcsin0.7303
    (1/150)-(1/90)
    1000/1.05^10
    100/0.05(1-1÷1.05^10)
    20lg8
    20lg15
    arcsin(660/1389)
    (8-20/3)*(5-20/3)*10/3
    arctan0.3577-arctan1-arctan0.098
    arctan0.2=
    【(769625269/805000000)*8100000】*95%-6585684=
    arctan2.236+arctan0.4472
    -arctan1.227-arctan0.2454
    !(45)
    567*456
    764×7-(5+6)÷4
    764+48÷8×7-8
    √12086
    1000(1-0.07/100)^2

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