Answer:
8 meters
Explanation:
I like to use this shortcut(or whatever you call it)
King Henry Died By Drinking Chocolate Milk
Kilo, Hecto, Deca, Base(unit), Deci, Centi, Milli
to get from millimeters(milli) to meters(base), you just move the decimal point that many times according to the shortcut(3).
So to get to meters, you just move the decimal point(7997.0) left three times since according to this shortcut, it is three words to the left. After moving three decimal points to the left, you should get 7.997, which is less than 8.
So, 7997(7.997 meters) millimeters in less than 8 meters.