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

### Instruction:
Marco loves trading cards. He has a total of 500 cards on hand, and a fourth of them are duplicates. Marco decides to trade one-fifth of these duplicates for completely new cards to his friend Josh. How many new cards did Marco get?

### Response:
 Marco ana kadi 500*0.25=<<500*0.25=125>>125 za nakala.
Anataka kubadilisha kadi 125*0.2=<<125*0.2=25>>25 kwa kadi mpya.