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

### Instruction:
A store puts out a product sample every Saturday. The last Saturday, the sample product came in boxes of 20. If they had to open 12 boxes, and they had five samples left over at the end of the day, how many customers tried a sample if the samples were limited to one per person?

### Response:
 Duka lilifungua masanduku 12 ya bidhaa 20, hivyo walitoa sampuli za bidhaa 20 * 12 = <<20*12=240>>240.
Walikuwa na sampuli 5 zilizobaki, maana yake 240 - 5 = 235 sampuli zilitumiwa.
Hivyo, 235 * 1 = <<235*1=235>>235 wateja walijaribu sampuli.