[aanders5]

Hi, our teacher for Japanese isn't very good with English, so I am having a hard time figuring out how exactly to write out the Kanji for an exercise.

The numbers are:
650
1800
714000
123000
3900000

I know how to write them hiragana, but I'm completely lost on how to write them in Kanji, all I know is 1-10, 100, 1,000, and 10,000.

Thanks for any help!