Deposit 5,000 yuan in the bank for four years, and the principal and interest will be 5,650 yuan at maturity. What is the annual interest rate (no interest tax).
将5000元存入银行，存四年，到期本金和利息共5650元，问年利率是多少(无利息税)．
<gadget id="calculator">5_650 - 5_000</gadget>
<output>650</output>

<gadget id="calculator">5_000 * 4</gadget>
<output>20_000</output>

<gadget id="calculator">650 / 20_000</gadget>
<output>13/400 = around 0.0325</output>

<result>13/400 = around 0.0325</result>