Hope Primary School has 240 graduates this year, an increase of (1/5) compared to last year. How many graduates were there last year?
希望小学今年有毕业生240人，比去年增加(1/5)，去年有毕业生多少人．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">240 / (6/5)</gadget>
<output>200</output>

<result>200</result>