Instead of writing the lesson taught by the math teacher, I'm writing this.
1. Gray Yeon
Books. Just books.
2. Alex Go
Gym. He'd spend his money on his gym subscription.
3. Ben Park
Chicken. The love of his life.
4. Gerard Jin
I feel like he'd spend his money mostly on music related stuff.
5. Rowan Im
Either clothes, soda or elbow cream.
6. Eugene Gale
I don't know, things to help him survive?
7. Teddy Jin
Coke and things for Co.
8. Donald Na
Gigi jackets. Just Gigi jackets.
9. Wolf Keum
The entire Kenzo franchise. And maybe some more glasses, if he feels like buying a new pair.
10. Jake Ji
Manga.
11. Jimmy Bae
Dates with Jack probably.
12. Forrest Lee
I don't know, Forrest stuff.
13. Dean Kwon
We all know he spends all his money on clothes, accessories and shoes.
14. Eunchan Hong
I feel like he spends his money on things for his friends. Or earrings.
15. Dongha Baek
Hair products. Just hair products.
16. Sangmok Do
Anti aging cream. He furrows his eyebrows most of the time. He definitely doesn't want wrinkles, so it makes sense.
17. Jack Kang
Expensive ass presents for Jimmy.
18. Kingsley Kwan
Nothing. I'm sure he holds all his money somewhere.
19. Stephen Ahn
Things for others.
20. Grape/Sam Lee
Cigarettes. He just looks like he spends all his money on cigarettes.