How many metes are in 6000 millimeters?

"Mete" is not a standard unit of measurement in the metric system. It seems likely that you meant "meters." If you're asking how many meters there are in 6000 millimeters, the answer is as follows:

The metric system is based on units of ten. There are 1000 millimeters (mm) in a meter (m). To convert millimeters to meters, you divide the number of millimeters by 1000.

6000 mm / 1000 = 6 m

So, there are 6 meters in 6000 millimeters.