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

### Instruction:
 Angie alinunua mara tatu zaidi ya vitumbua kwenye duka kama Shelly. Shelly alinunua nusu ya vitumbua kama Barry. Ikiwa Barry alinunua vitumbua 12, Angie alinunua vitumbua vingapi?


### Response:
 Shelly alinunua 12/2=<<12/2=6>>6 vitumbua
Angie alinunua 6*3=<<6*3=18>>18 vitumbua