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

### Instruction:
Archie received his medical receipt from his doctor, and he needs to take antibiotics three times a day. If antibiotic costs $3 each and he needs to take it for a week, how much money does he need to buy the antibiotics?

### Response:
 Archie anahitaji $3 x 3 = $<<3*3=9>>9 kwa siku kununua antibiotics 3.
Hivyo Archie anahitaji $9 x 7 = $<<9*7=63>>63 kununua antibiotics ambazo zitadumu kwa wiki moja.