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

### Instruction:
 Kwenye kifaa cha USB chenye uwezo wa GB 16 (gigabyte), 50% tayari imejazwa. Hesabu idadi ya gigabyte zilizobaki.


### Response:
 Tuna: 16 * .5 = <<16*.5=8>>8 GB (gigabyte) tayari imejazwa kwenye kifaa hiki.
Hivyo, GB 16 - 8 GB = <<16-8=8>>8 GB (gigabyte) zilizobaki kwenye kifaa hiki.