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

### Instruction:
 Shule inaandaa safari ya kwenda makumbusho. Magari 4 yameajiriwa kuchukua watoto na walimu kwenda marudio yao. Gari la pili lina watu mara mbili ya gari la kwanza. Gari la tatu lina watu 6 wachache kuliko gari la pili. Gari la nne lina watu 9 zaidi ya gari la kwanza. Ikiwa gari la kwanza lina watu 12, watu wangapi wanaenda makumbusho kwa jumla?


### Response:
 Gari la pili lina watu 12 * 2 = <<12*2=24>>24.
Gari la tatu lina watu 24 – 6 = <<24-6=18>>18.
Gari la nne lina watu 12 + 9 = <<12+9=21>>21.
Hivyo, jumla ya watu ni 12 + 24 + 18 + 21 = <<12+24+18+21=75>>75.