Calculate the Gini Coefficient (Also known as the Gini Index) for inequality.
-- THIS IS CURRENTLY AN ERRONEOUS CALCULATION, DON'T RELY ON IT! --
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-- SELECT SUM(Users.Reputation) as totalRep FROM Users;
-- SELECT COUNT(*) FROM Users;
SELECT SUM( (1225580 + 1 - CAST(Users.Id as Float)) * CAST(Users.Reputation as Float)/ 177944217)