Oh wow... $200 a month would is $7 a day.
I have no idea how it's even possible to survive on that budget in Los Angeles. I hope cost of living is a lot lower where you live?
Anyway, what I do is that I usually have only one meal a day (usually from fast food, since my cooking abilities are very limited), plus a snack (usually Oreos or ice cream). That still amounts to about $15-20 a day from what I've seen, but again hopefully prices are lower for you. Of course that's not a very mainstream choice.