Calculate the poverty gap for a country in which 80% of the population is below the poverty line of 1 dollar a day. In that country, 20% of the population has a daily income below 20 cents, 15% has a daily income between 20 and 40 cents, 15% has a daily income between 40 and 60 cents, 10% has a daily income between 60 and 80 cents, and 20% has a daily income between 80 cents and 1 dollar.