The Olympic Village is made up of 31 buildings that each contain 17 floors. In those 31 buildings, there are 3,604 apartments. In addition to the 10,000 athletes these apartments house during the games, they also provide shelter for the trainers, coaches, and medical staff who accompany them. The grand total of humans dwelling in these rooms for three weeks in August comes to about 18,000.
And you know what 18,000 people need? Stuff. Things. Furniture. They need places to sleep, to sit, and to store their equipment, which, given that these people are athletes who need specific tools to do their specific jobs, they tend to have a lot of. The amount of furniture that these tens of thousands of people require ends up totaling around 1.3 million items.