context: With 10 million registered residents living in an area of ​​605.21 km², Seoul is one of the most populous cities in the world. Its density has made it one of the digital-cable cities in the world. The city also has more than 1 million registered vehicles which cause traffic jams past midnight. The large Seoul section and commuter area, including the Incheon city dock and the Seongnam residential area, are one of the most populous regions in the world.
question: What is the population in Seoul?
answers.text: 10 million