Xiao Wang bought a certain one-year bond of China Construction Bank for 1,000 yuan, and when it matured, he took out the principal and interest of 1,036 yuan. What is the annual interest rate of this bond?
建设银行某种一年期债券，小王买了1000元，到期他取出本金和利息共1036元，这种债券的年利率是多少．
<gadget id="calculator">1_036 - 1_000</gadget>
<output>36</output>

<gadget id="calculator">36 / 1_000 / 1</gadget>
<output>9/250 = around 0.036</output>

<result>9/250 = around 0.036</result>