Mathematics
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current location:Mathematical operation > History of Mathematical Computation
    1600×6000= 96000×2000= 280000÷700= 3000×60000= 7000×60000= 2800000÷7000=
    36000×5000= 16000×6000= 486000÷600= 1600×5000= 15600×1000= 486000÷6000=
    7600×4000= 86000×4000= 246000÷6000= 1600×5000= 26000×5000= 246000÷600= 2600×5000= 12600×5000= 360000÷6000=
    2300×6000= 7000×6000= 65000÷5000= 6000×3000= 6100×4000= 65000÷500= 2600×4000= 6000×4000= 65000÷5000=
    cosπ
    arctan1.2
    arctan2(0.6)
    arctan(0.6)
    cos(180/7)^2*sin(270/7)^2/sin(360/7)^2
    cos3^2
    sin(270/7)
    sin(360/7)
    sin360/7
    arctan0.9
    arctan1.8
    arctan(1/1.4)
    arctan1/1.4
    10*1000/(4^(4-1-1))
    (-1/4)+1 4/5+(-3/4)
    (-4/1)+15/4+(-4/3)

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