The shoe factory produced 960 pairs of leather shoes in September, which was 160 pairs more than planned. By what percentage?
鞋厂九月份生产皮鞋960双，比计划超产160双，超产了百分之几？
<gadget id="calculator">960 - 160</gadget>
<output>800</output>

<gadget id="calculator">160 / 800</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>