Few days ago, I played Monopoly, it is a board game. People play it for a long time, almost everyone knows this game. But, I do not play it often. At first, I didn't use my money randomly. So, I had lots of money. But, this caused I can't get many rent, because I did not built many house. Then, I went to a block that had four houses. So, I must pay 925 Monopoly. I sold some houses, so I can pay 925 Monopoly. I was glad that I didn't use many money so I can pay it. But, if I built many house, I may get more money so that I can pay 925 Monopoly more easily. Money often comes with risky.