International Economics Midterm

I need someone that is good in Economics. This is an International Economics midterm.. (MUST BE ABLE TO DO MATH)! Math questions consist of mathematical comparative advantage, opportunity cost, gains from trade calculations. Consumer surplus and Producer surplus. There are a number of questions on the exam that will ask you to be able to read a market diagram and to calculate values of it's various areas... 

Economics Expertise preferred!! Major in Economics Preferred!!