Cut a watermelon into 9 pieces on average, Xiaoqiang ate 3 pieces in the middle period, and Xiaojun ate 5 pieces in the middle period, what percentage of the watermelon did Xiaojun eat more than Xiaoqiang?
把一个西瓜平均切成9块，小强吃了期中的3块，小军吃了期中的5块，小军比小强多吃了这个西瓜的几分之几？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<result>2/9 = around 0.222222</result>