Below is an instruction that describes a task. Write a response that appropriately completes the request in French. Please answer in French.

### Instruction:
 James paves a new parking lot. It is 400 feet by 500 feet. Only 80% of that is useable for parking. It takes 10 square feet to park a car. How many cars can be parked?


### Response:
 Le parking mesure 400*500=<<400*500=200000>>200 000 pieds carrés.
Il y a 200 000*0,8=<<200000*0.8=160000>>160 000 pieds carrés pour le stationnement.
Cela signifie qu'il peut garer 160 000/10=<<160000/10=16000>>16 000 voitures.