machine factory produced 528 machines in June last year, 28 more than planned. Overproduction percentage?
某机器厂去年6月份生产机器528台，比计划多28台．超产百分之几？
<gadget id="calculator">528 - 28</gadget>
<output>500</output>

<gadget id="calculator">28 / 500</gadget>
<output>7/125 = around 0.056</output>

<result>7/125 = around 0.056</result>