A building has four floors with ten rooms each. Legacy has to clean each room, and it takes her 6 hours to clean one room. If she earns $15 per hour of work, calculate the total amount of money she makes from cleaning all the floors in the building. Think carefully first, then make a decision:
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Since the building has four floors with ten rooms each, the total number of rooms in the building is 4 * 10 = 40. If it takes Legacy 6 hours to clean each room, she will take 40 * 6 = 240 hours to clean all the rooms in the building. Since she is making $15 per hour of work, she will earn $15 * 240 = $3600 after cleaning all the rooms. So, the answer is 3600.
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