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

### Instruction:
Gerald had 20 toy cars. He donated 1/4 of his toy cars to an orphanage. How many toy cars does Gerald have left?

### Response:
 Gerald alitoa 20 x 1/4 = <<20*1/4=5>>5 ya magari yake.
Hivyo, sasa anabakiwa na magari 20 - 5 = <<20-5=15>>15.