it depends on ticket prices... assuming a
60.000
15.000
4.500
500
arena
60kx20=1200k
15kx70=1050k
4,5kx200=900k
500x1600=800k
total 3.950.000
considering that you shouldn't be able to full it, but i guess max 30%
11850000
you just paied: 16000000+10500000+9000000+8000000=43.500.000 to build it... you need 3 season of 30% income to repay your costs....