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

### Instruction:
 Brenda bakes 20 cakes a day. She does this for 9 days and then sells half of the cakes. How many cakes are left with Brenda?


### Response:
 Le nombre total de gâteaux après 9 jours est de 20 * 9 = <<20*9=180>>180 gâteaux.
Après avoir vendu la moitié d'entre eux, il reste 180 * 0,5 = <<180*0.5=90>>90 gâteaux.