There are 3,600 students in the Experimental Primary School this year, an increase of 600 compared with last year. What percentage is the increase compared with last year?
实验小学今年在校学生有3600人，比去年增加了600人，比去年增加了百分之几？
<gadget id="calculator">3_600 - 600</gadget>
<output>3_000</output>

<gadget id="calculator">600 / 3_000</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>