Divide a 1-meter-long line segment into 4 parts on average, and each part is the number of this line segment.
把1米长的线段平均分成4份，每份是这条线段的多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>