I have no idea how you could wright it. If you wanted to write it in words, it is six and eight tenths.
Cedric Wright has written: 'Words of the earth'
509/100
Multiply by 100: 0.2 x 100 = 20 %
They called the one that had flown more than 100 seconds the Wright Flier.
Five hundred.
Eighty million.
DC (500 + 100)
Three and two tenths.
Nine and eight tenths.
Two and eight thousandths
Wheel/shipwright.