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

### Instruction:
There are 20 stickers on a page. If you have 12 pages of stickers but lose one of the pages, then how many stickers would you have?

### Response:
 Baada ya kupoteza ukurasa mmoja, utakuwa na kurasa 12 - 1 = <<12-1=11>>11 za stika.
Ikiwa kila ukurasa una stika 20, utakuwa na stika 11 x 20 = <<11*20=220>>220.