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

### Instruction:
Barney washes his kitchen towels once a week. He owns eighteen towels and uses two at a time that he changes to clean towels daily. He missed one week of laundry. How many days the following week will Barney not have clean towels?

### Response:
 Barney anatumia taulo mbili safi kila siku, hivyo anatumia taulo 2 * 7 = <<2*7=14>>14 kwa wiki.
Alikosa kufulia kwa wiki moja, hivyo anahitaji taulo 14 * 2 = <<14*2=28>>28 kwa wiki mbili.
Anamiliki taulo 18, hivyo ana taulo 28 - 18 = <<28-18=10>>10 chini ya mahitaji.
Hivyo, Barney hatakuwa na taulo safi siku 10 / 2 = <<10/2=5>>5.