Yes
3 and 9
No. It is a prime number and is only divisible by 1 and itself.
Every one of the infinite number of multiples of 9 is, as well as roughly 1/3 of the multiples of 3. There sure are a huge number of them.
5divided by9 = 0.5555555555555556
7 divided by9 = 0.7777777777777778
1subtracted by9 tenths = -8
68 divided by9 = 7.555555555555555
2, 3, 6, yes. 4, 5, 9, 10, no.
3
1
1.4444