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

### Instruction:
 Viti vya basi vimepangwa katika safu 23 za viti 4. Mwanzoni, watu 16 wanaingia. Katika kituo cha kwanza, watu 15 wanapanda basi na 3 wanashuka. Katika kituo cha pili, watu 17 wanapanda basi na 10 wanashuka. Kuna viti vingapi vilivyosalia wazi baada ya kituo cha pili?


### Response:
 Kwanza tunahesabu idadi ya viti vya kudumu: 23 * 4 = <<23*4=92>>92 viti
Kisha tunahesabu idadi ya watu mwanzoni: 16+15-3 = <<16+15-3=28>>28 watu
Kisha katika kituo cha kwanza: 28+17-10= <<28+17-10=35>>35 watu
Hatimaye tuna 92-35 = <<92-35=57>>57 viti vilivyosalia wazi