SEDE-Query for Rep-Trivia
First of all, when you are selecting and want to perform mathematics on it you should directly specify what you want done

instead of 

Voters.Upvotes * 8 as [EstimatedAddedRep], 


it should be 

(Voters.Upvotes * 8) AS [EstimatedAddedRep]     


And 

Voters.Upvotes * 8 / Users.Reputation as [Ratio]


Should be

((Voters.Upvotes * 8) / (Users.Reputation)) as [Ratio]


you should always specify with parenthesis when performing arithmetic in code, because it doesn't always do what you think it will do.



I don't do this with my FROM and WHERE Statements

FROM Users, Voters
WHERE users.id = Voters.Id


I would do this

FROM Users INNER JOIN Voters ON Users.Id = Voters.Id


and leave out the WHERE clause.  



For the issue brought up in Chat  you would just need to add it in like this (simple query so not an issue to repeat yourself in the select)

((Voters.Upvotes * 8) / Users.Reputation) AS RepCreated --?????




Check all your Columns and Tables as well, you have some weird casing issues where sometimes you capitalize and sometimes you don't, it was hard to figure out what was right