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

### Instruction:
A park has 50 benches with a capacity of 4 people each. On a Sunday afternoon, 80 people were sitting on the benches. What's the number of available spaces on the benches that other people can sit on before the carrying capacity of the benches is full?

### Response:
 Kwenye bustani, viti 50 vyenye uwezo wa watu 4 kila kimoja vina jumla ya nafasi 50*4 = <<50*4=200>>200 za kuketi.
Ikiwa watu 80 tayari wamechukua nafasi, idadi ya nafasi zilizo wazi ni 200-80 = <<200-80=120>>120 za kuketi.