I was living in Korea in 2019 and my visa expired when Corona started. After living in Korea illegally, I decided to voluntarily leave the country in 2020 and contacted the immigration office. At this time, the immigration office asked me to choose one of two options: paying a fine of 10 million won or banned from entering Korea for 5 years. I chose to be banned from entry for 5 years because I had no money at the time. After some time, I want to re-enter Korea. Now that I have money, I want to go back to Korea even if I need to pay the fine I couldn't pay then. I tried to contact the immigration office, but they said that if I left Korea, I could not pay the fine again. What should I do?