Modifying Joomla module on website

We are using a custom built movie rating and reviewing system. One module: "Våre brukeres valg" on the website f i l m t i d dot n o needs some work. (located in the right column on the site ) Basically today it works in a way which "adds" all the variables of users ( it is sort of a rating stuff ) instead of giving a "average rating" of users. Better explained: 1: 10 users on the site rate their favorite movies. Lets say they all give different "ratings". User 1 gives a 10, user 2 gives a 9 and so on. Total number would then be 20 and this is how it is today. However, the average score would be 5 and this is what we want to show. Most likely a very simple fix. Website is in norwegian but code is written in english. I will help with translating if needed. If anything is unclear, this needs to be sorted before bidding. Not sure how you would be working with this but I can send the module ( code ) in a file or whatever would work the best. I would prefer for the coder NOT to work on our live server. ( if at all possible ) ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Joomla Mysql Php All version of IE, Firefox, Opera, Safari