Digits add to 9- keep adding till 1 digit...part 2

Here is an interesting game. Type in a number where all the digits add up to 9. For Eg.

621 - 6+2+1=9

or

972- 9+7+2=18 - 1+8=9 (18 can be further added to come up to 9)

Let us begin.

990981

(please do not start new thread without permission...just PM me...thanks for your patience)