when we write .66667 as a fraction we have to write .66667 as numerator and put 1 as the denominator.
Now we start multiplying numerator and denominator by 10 as long as you get in numerator the whole number.
.66667 = .66667/1 = 6.6667/10 = 66.667/100 = 666.67/1000 = 6666.7/10000 = 66667/100000
so, we can write 0.66667 as fraction is 66667 / 100000
