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

### Instruction:
 Katika mkusanyiko wa CD za muziki wa Henry, ana CD 3 za nchi zaidi ya CD za muziki wa rock lakini mara mbili ya CD za muziki wa classical. Ikiwa ana CD 23 za nchi, CD ngapi za classical zinaunda mkusanyiko wake?


### Response:
 Henry ana CD 23-3=<<23-3=20>>20 za muziki wa rock.
Henry ana CD 20/2=<<20/2=10>>10 za muziki wa classical.