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

### Instruction:
 Rollo ana sungura 3, sungura wa kwanza hula kikombe 2 cha chakula, sungura wa pili hula mara mbili ya sungura wa kwanza, na sungura wa tatu hula vikombe 3 zaidi ya sungura wa pili. Rollo anahitaji kikombe ngapi cha chakula kuwalisha sungura wake wote?


### Response:
 Sungura wa kwanza = <<2=2>>2 vikombe
Sungura wa pili = 2 x 2 = <<2*2=4>>4 vikombe
Sungura wa tatu = 4 + 3 = <<4+3=7>>7 vikombe
Rollo anahitaji jumla ya vikombe 2 + 4 + 7 = <<2+4+7=13>>13 vya chakula kwa sungura.