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

### Instruction:
John buys cans of soup for buy 1 get one free.  He gets 30 cans with a normal price of $0.60.  How much does he pay?

### Response:
 Ananunua makopo 30/2=<<30/2=15>>15
Hivyo inamaanisha anatumia 15*.6=$<<15*.6=9>>9