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

### Instruction:
Preston has a sandwich shop. He charges $5 for each sandwich. He also charges $20 for a delivery fee. Abra Company orders 18 sandwiches from Preston and also tips him 10%. How much total, in dollars, did Preston receive?

### Response:
 Sandwich inagharimu $5 kila moja hivyo sandwich 18 inagharimu 5*18 = $<<5*18=90>>90.
Pia anachaji ada ya kusafirisha ya $20.
Jumla ya gharama, kabla ya bahasha, ni 90+20 = $<<90+20=110>>110.
Bahasha ni 10% hivyo inakuwa .10*110 = $<<10*.01*110=11>>11.
Jumla ni 110+11 = $<<110+11=121>>121.