maths

0.6, 3/5,6/10,12/20

\(\frac{\frac{\frac{\frac{\frac{\frac{\frac{\frac{\frac{\frac{\frac{(8*5)^2-10(8*5)+8*6-5*4+0.8}{2}}{2}}{2}}{2}}{2}}{2}}{2}}{2}}{2}}{2}}{2}\)

The above equals 0.6.