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

### Instruction:
James is a first-year student at a University in Chicago. He has a budget of $1000 per semester. He spends 30% of his money on food, 15% on accommodation, 25% on entertainment, and the rest on coursework materials. How much money does he spend on coursework materials?

### Response:
 ที่พักคือ 15% * $1000 = $150
อาหารคือ 30% * $1000 = $300
ความบันเทิงคือ 25% * $1000 = $250
วัสดุการเรียนการสอนเป็น $1000 - ($150 + $300 + $250) = $300