Mr. Li has a collection of 1,200 books, an increase of 25% over last year. How much more than last year?
李老师藏书1200本，比去年增加25%，比去年增加多少本？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1_200 / (5/4)</gadget>
<output>960</output>

<gadget id="calculator">1_200 - 960</gadget>
<output>240</output>

<result>240</result>