Out of the rating of 6.8 scored by title "No Loan Again, Naturally", how many percent of it consists of scores 5 to 10?
scores 5 to 10 refers to TOTAL(percent) where 1 < = stars < 5
SELECT SUM(T2.percent) FROM Episode AS T1 INNER JOIN Vote AS T2 ON T2.episode_id = T1.episode_id WHERE T1.title = 'No Loan Again, Naturally' AND T1.rating = 6.8 AND T2.stars BETWEEN 5 AND 10;