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

### Instruction:
The New York City Council bought 200 streetlights to modernize its squares. But they don't have enough squares to use all the streetlights bought. Knowing that there are 15 squares in New York and that each park will have 12 new streetlights bought by the city council, how many unused streetlights will remain?

### Response:
 Kwa hivyo idadi jumla ya taa za barabarani zitakazotumiwa ni 12 taa za barabarani/uwanja x 15 viwanja = 180 taa za barabarani
Kutakuwa na taa za barabarani 200 - 180 = <<200-180=20>>20 zisizotumiwa.