Mathematics
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    50*30%
    17.8-5.06
    3.6*5
    242+48
    3.4e*10^38
    arccos0.9727
    √5+√5/4
    √5+√4/5
    (1009785*(631.601-150+50)+0.99*27.5*1200*104*(104/2-50))/(435*200)
    1.492457-1.492457/(-tan(1.492457)^(2))
    1.5-1.5/(-tan(1.5)^2)
    102.3%*(1+0.3%)
    sin4/3π
    1/3×11^3-7×11^2+111×11+50
    arccos0.9625
    (63972000000-65172000000)/65172000000
    (49778000000-50728000000)/50728000000
    (48429000000-56629000000)/56629000000
    200000000*(388.52-2.66)-13200000000
    140000000*(432.76-2.56)-10450000000

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