A town initially has a population of 50,000 people. Over the next year, 10% of the population moves out, and 5% of the remaining population moves in. After these changes, 1/10 of the population gives birth, and 1/5 of the newborns are twins. How many people are there in the town after these births? Let's think step by step and output the final answer within \boxed{}.
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