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

### Instruction:
Amanda received $50 as a gift. She plans to buy two cassette tapes that cost $9 each and a headphone set that costs $25. How much money will she have left?

### Response:
 Kaseti zitagharimu 2 × 9 = $<<2*9=18>>18.
Atatumia jumla ya 18 + 25 = $<<18+25=43>>43.
Amanda atakuwa na 50 - 43 = $<<50-43=7>>7 zilizobaki.