I write it as: 90 000 009 009 009 as I use the long scale (as used in Europe). Others write it as: 90 009 009 009 as they use the short scale (as used in USA).
nine thousandths
009 = 9 is an integer and not a fraction. However, it can be expressed in rational form as 9/1. You can then calculate equivalent rational fractions if you multiply both, its numerator and denominator, by any non-zero integer.
419, 009
.009 and .008
2-009 i think
.009 Nine thousandths in decimal form is 0.009.
1+.0+009
3 009 054
9% = 0.09 0.9% = 0.009
Change them to improper fractions and double them.
4, 002, 009, 001