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

### Instruction:
Calvin buys a pack of chips, for $0.50, from the vending machine at lunch, 5 days a week. After 4 weeks, how much money has Calvin spent on chips?

### Response:
 Calvin anatoa $0.50 kwa ajili ya chipsi kila siku kwa siku 5 hivyo 0.50*5 = $<<0.50*5=2.50>>2.50 kwa wiki moja.
Baada ya wiki 4, Calvin ametoa 4*2.5 = $<<4*2.5=10>>10 kwa ajili ya chipsi.