How many buses do we need?
I ordered three machines that makes your eyesight better.
The rich company president has three luxury cars.
This counter is used with some kind of machine or device, usually a fairly large one (so nothing itty bitty). Cars are a good example of this. But it can also be used for things like computers, which were once the size of rooms, but are now nice and small. Thanks technology!
The reading is the same as the one you learned with the kanji. Be sure to omit the 〜 in your answer as it is only a placeholder for a number.