Reconstruct a question, answer pair from this explanation: All together, they need to raise ($450 x 6) + $3000 = $5700. The raised $600 + $900 + $400 = $1900 the first 3 days. For the next 4 days, they only raised $1900 / 2 = $950. In the week, they raised $1900 + $950 = $2850. They still need $5700 - $2850 = $2850. Each person still needs $2850 / 6 = $475.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Q:A group of 6 students organized a fundraiser to go to Nicaragua for the summer. For them to go on the trip, each of them needs at least $450. On top of that, they need $3000 for their miscellaneous collective expenses. On the first day of their fundraiser, they receive $600. On the second day, they receive $900, and on the third day, they receive $400. For the next 4 days, they receive only half of what they raised on the first 3 days. How much more money does each person need to raise for them to reach their goal?
A:475