You need to specify the unit of measurement for 143000. For example:

* 143000 meters: There are 1000 meters in 1 kilometer, so 143000 meters is equal to 143 kilometers.

* 143000 centimeters: There are 100000 centimeters in 1 kilometer, so 143000 centimeters is equal to 1.43 kilometers.

Let me know the unit of measurement for 143000, and I can tell you how many kilometers it is equal to.