Jerry starts a savings account with ＄$$7,000$$ at a bank. The interest rate is $$3\textbackslash\%$$ per year. How much interest will he earn in his savings account at the end of the second year? 
Overseas Competition->Knowledge Point->Word Problem Modules->Word Problems in Economics->Interest Problems
$$7000\times \left( 1+3\textbackslash\% \right)\times \left( 1+3\textbackslash\% \right)-7000=426.3$$. 