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

### Instruction:
 Cindy a 37 enveloppes. Si Cindy donne 3 enveloppes à chacun de ses 5 amis, combien d'enveloppes lui reste-t-il ?


### Response:
 Cindy a donné 3 enveloppes/ami x 5 amis = <<3*5=15>>15 enveloppes à ses amis.
Cindy a donc 37 enveloppes - 15 enveloppes = <<37-15=22>>22 enveloppes restantes.