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

### Instruction:
James decides to start making his own coffee.  He buys a coffee machine for $200 and gets a $20 discount.  He figures it will cost him $3 a day to make his coffee.  He previously bought 2 coffees a day for $4 each.   How long until the machine pays for itself?

### Response:
 Alilipa $200-$20=$<<200-20=180>>180 kwa mashine
Awali alikuwa anatumia $4*2=$<<4*2=8>>8 kwa siku
Hivyo anapata akiba ya $8-$3=$<<8-3=5>>5 kwa siku
Itamchukua $180/$5=<<180/5=36>>36 siku kulipia gharama yake.