Mr. Tan sold his house for $400 000. He paid the transfer fees that amount to 3% of the selling price and also paid a brokerage fee that is 5% of the selling price. If he also paid $250 000 for the remaining loan amount of the house, how much is Mr. Tan's net proceeds from selling the house?
Please reason step by step, and put your final answer within \boxed{}.
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