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

### Instruction:
 Sasha alifanya mikate 30 ya chokoleti kwa ajili ya kuchangisha pesa shuleni. Melissa alifanya mikate mara nne ya ile ya Sasha, na Tiffany alifanya nusu ya jumla ya mikate ya Sasha na Melissa. Ikiwa kila mkate uliuza kwa $4, waliweza kuchangia kiasi gani kwenye kuchangisha pesa?


### Response:
 Melissa alifanya mikate 30 x 4 = <<30*4=120>>120.
Pamoja, Sasha na Melissa walifanya mikate 30 + 120 = <<30+120=150>>150.
Tiffany alifanya mikate 150/2 = <<150/2=75>>75.
Jumla, walifanya mikate 150 + 75 = <<150+75=225>>225.
Walichangia $225 x $4 = $<<225*4=900>>900 kwenye kuchangisha pesa.