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

### Instruction:
 Sue alikopa vitabu 15 na filamu 6. Aliwarudisha vitabu 8. Kisha aliwarudisha filamu moja kwa tatu kwenye maktaba na kukopa vitabu 9 zaidi. Sue ana vitabu na filamu ngapi sasa?


### Response:
 Sue alikuwa na vitabu na filamu 15 + 6 = <<15+6=21>>21.
Baada ya kurudisha vitabu 8, alikuwa na vitabu na filamu 21 - 8 = <<21-8=13>>13.
Aliwarudisha filamu 6/3 = <<6/3=2>>2 kwenye maktaba.
Baada ya kurudisha filamu 2, alikuwa na vitabu na filamu 13 - 2 = <<13-2=11>>11.
Alikopa vitabu 9, hivyo alikuwa na vitabu na filamu 11 + 9 = <<11+9=20>>20.