Mathematics
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    1.61-(0.8-0.35)*sin(36.87+23.39)
    1.61+0.4*sin(23.39+36.87)
    arcsin(0.37)
    arccos(-0.52)
    arcsin(0.45)
    arcsin(-1/2)
    arccos(cos(7*π/10))
    arccos(cos(7*π/10))
    arccos(cos(7π/10))
    arccos(4/15)
    (8)¾
    
    (19799.8+0+43938.6)/ 52976
    (19799.8+0+43938.6)/ 36421
    24×150×3.14×2.99×1.3
    662.2×5.5×1×10
    662.2×1.3×2.3×10
    e^(-4.65)
    e^4.65
    2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2*2

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