Simplify the following text for a Grade 10 native English-speaking person.
Original: Financial economics is the branch of economics studying the interrelation of financial variables , such as prices , interest rates and shares , as opposed to those concerning the real economy . Financial economics concentrates on influences of real economic variables on financial ones , in contrast to pure finance .
Simplified: Financial economics is the study of economics which is important to financial things like changes in price and supply of goods .