Mathematics
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    (43346×0.218+2506)×1.5
    ((14695×(1+0.466×3)+4780)×0.218+2506)×1.5
    ((9570×(1+0.466×3)+4780)×0.122+1409)×1.75*0.75
    √128
    √204
    tan90 0/(1-1)
    tan90 0/0
    sqrt-1
    arctan(-3)
    arctan(26/7)
    arctan(-5/3)
    4200*20
    7560000/4200*20
    9000000*84%
     arctan(2/3)
    -0.588003/3.14159
    arctan(-2/3)
    500-12.5
    34500000/1533.3336
    23/54*3600

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