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

### Instruction:
 Josh ana mikanda ya urembo ya urefu wa yadi 18 ambayo itatumika sawa kwa zawadi 6. Ikiwa kila zawadi itatumia yadi 2 ya urembo, yadi ngapi ya urembo itasalia?


### Response:
 Zawadi 6 zitatumia 6 x 2 = <<6*2=12>>12 yadi ya urembo.
Hivyo, yadi 18 - 12 = <<18-12=6>>6 ya urembo itasalia.