A factory originally produced 160,000 light bulbs per month, but now it has increased to 180,000. How much has the output increased?
一个工厂原来每月生产灯泡16万只，现在增加到18万只，产量提高了多少．
<gadget id="calculator">18 - 16</gadget>
<output>2</output>

<gadget id="calculator">2 / 16</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>