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

### Instruction:
 Tom bought 10 packages of miniature racing cars. Each package contains five cars. He gave each of his two nephews 1/5 of the cars. How many miniature racing cars are left with Tom?


### Response:
 El número total de autos de carreras en miniatura es 10 x 5 = <<10*5=50>>50.
Tom le dio 10 autos de carreras en miniatura a cada uno de sus dos sobrinos.
Entonces, le dio un total de 10 x 2 = <<10*2=20>>20 autos a sus dos sobrinos.
Por lo tanto, a Tom le quedan 50 - 20 = <<50-20=30>>30 autos de carreras en miniatura.