Table: football_clubs_valuation
Columns: rank
team
country
value_m
debt_as_of_value
change_on_year
revenue_m
operating_income_m

Question: Name the average debt as % of value for operating income more than -16 and % change on year being 62
SQL: SELECT AVG("debt_as_of_value") FROM football_clubs_valuation WHERE "change_on_year" = '62' AND "operating_income_m" > -16

Question: Name the country where % change on year is 21 and value is less than 86
SQL: SELECT "country" FROM football_clubs_valuation WHERE "debt_as_of_value" < 86 AND "change_on_year" = '21'

Question: Name the total number of revenue for italy with team of internazionale with operating income less than 27
SQL: SELECT COUNT("revenue_m") FROM football_clubs_valuation WHERE "country" = 'italy' AND "team" = 'internazionale' AND "operating_income_m" < 27

Question: Name the most revenue for operating income more than 27 for hamburg and debt as % of value less than 0
SQL: SELECT MAX("revenue_m") FROM football_clubs_valuation WHERE "operating_income_m" > 27 AND "team" = 'hamburg' AND "debt_as_of_value" < 0