How much is 999 X 999?

998001 you know

999

x

999

___

8991

8991

8991

______

998001

8991+89910=98901+899100=998001 explanation complete, I put zero in the last 2 because its not in the same place and to make it easier to add.... i put zero like this

999

x 999

___

8991

89910

899100

_______

998001