For reference, if you compare the economic power between South Korea and North Korea,
Nominal GDP per capita – South Korea: $34,642 North Korea: $590
Nominal GDP – South Korea: USD 1,858.5 billion North Korea: USD 15,1767.3 billion
PPP GDP per capita – South Korea: $65,112 North Korea: $2,300
PPP GDP – South Korea: $3.3631 trillion North Korea: $40 billion
National wealth – South Korea: $11.41 trillion North Korea: $100 billion
Export amount – South Korea: USD 683.8 billion North Korea: USD 360.44 million
Import Amount – South Korea: USD 632 billion North Korea: USD 2,335.67 billion
Looking at it this way, the difference in economic power between North and South Korea is huge.
Countries with similar economic power to South Korea include Japan, Taiwan, Mexico, Canada, Australia, New Zealand, Italy, Spain, and Finland.
Countries with similar economic power to North Korea include Bangladesh, Myanmar, Nepal, Zimbabwe, Kyrgyzstan, Haiti, Senegal, Pakistan, and Zambia.
In other words, South Korea is similar to countries in Europe and North America (excluding the United States), and North Korea is similar to poor countries in Southeast Asia and the poorest countries in Africa.