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

### Instruction:
 Ivan ana chombo cha kulisha ndege katika bustani yake ambacho kinaweza kubeba vikombe viwili vya chakula cha ndege. Kila wiki, anapaswa kujaza chombo hicho kilichosalia tupu. Kikombe kimoja cha chakula cha ndege kinaweza kulisha ndege kumi na nne, lakini Ivan daima anamfukuza chipukizi mwenye njaa ambaye anachukua nusu kikombe cha chakula cha ndege kila wiki. Ndege wangapi chombo cha kulisha ndege cha Ivan kinawalisha kila wiki?


### Response:
 Chipukizi anachukua nusu kikombe cha chakula cha ndege kila wiki, hivyo ndege hula vikombe 2 - 1/2 = 1 1/2 vya chakula cha ndege.
Kila kikombe kinawalisha ndege kumi na nne, hivyo chombo cha kulisha ndege cha Ivan kinawalisha ndege 14 * 1 1/2 = 21 kila wiki.