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

### Instruction:
Marlon has a gift card for $200. He spent half of it on Monday and one-fourth of the remainder on Tuesday. How much was left on his gift card?

### Response:
 Kwa kuwa Marlon alitumia nusu ya kadi ya zawadi, basi nusu yake ambayo ni $200/2 = $<<200/2=100>>100 ilibaki Jumatatu.
Kisha Jumanne, alitumia $100/4 = $<<100/4=25>>25.
Hivyo, ana $100 - $25 = $<<100-25=75>>75 zilizobaki kwenye kadi yake ya zawadi.