Divide a line segment of 2 decimeters into 5 parts on average, how many decimeters are in each part
把2分米长的线段，平均分成5份，每份是多少分米
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 * (1/5)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>