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

### Instruction:
 Max likes to collect model trains. He asks for one for every birthday of his, and asks for two each Christmas. Max always gets the gifts he asks for, and asks for these same gifts every year for 5 years. At the end of the 5 years, his parents give him double the number of trains he already has. How many trains does Max have now?


### Response:
 Max reçoit 1+2=<<1+2=3>>3 trains par an.
Il répète cela pendant 5 ans, ce qui signifie qu'il reçoit 5*3=<<5*3=15>>15 trains.
Avant que ses parents ne lui donnent le double du nombre de trains qu'il possède déjà, il a 15 modèles de trains.
Ses parents lui donnent 15*2=<<15*2=30>>30 modèles de trains.
En ajoutant ces deux quantités, Max a 15+30=<<15+30=45>>45 modèles de trains.