655

280

490

870

870: 30, I get 270 on second turn of division, then 270:3= 9 .  I use 0 and 9, make 60 tickers: 0-9, 9-9, 09-, 90-, -90, -09. Hit 490, win $500. 

490:30, when I get 190 during division, I use zero and 190:30=8, so use 3 and 8, make 60 tickets, hit 280, win $500. 

280: 30, this calculation did not work. Theoretically, I spent $240, and won $1000.