A factory produces 120 machines in October, which is 40 more than in September. How much is the increase?
一个工厂十月份生产机器120台，比九月份多生产40台，增产了百分之几？
<gadget id="calculator">120 + 40</gadget>
<output>160</output>

<gadget id="calculator">40 / 160</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>