Xinguang Primary School had 600 students last year, 20% more than this year. How many students are there this year?
新光小学去年在校学生有600人，比今年多20%．今年在校学生有多少人？
<gadget id="calculator">20 / 100</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">600 / (6/5)</gadget>
<output>500</output>

<result>500</result>