There are 30 major league baseball stadiums. Zach has a goal to take his son to see at least one game at each one. He has calculated the average cost for them to travel and see a game will be $900 per stadium. Zach can save $1,500 per year for his baseball stadium trips. How many years will it take Zach to accomplish his goal?
Please reason step by step, and put your final answer within \boxed{}.
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