On a drawing with a scale of 5:1, a line segment with a length of 2 cm represents the actual length of an object in centimeters.
在比例尺是5：1的图纸上，2厘米长的线段表示某物体的实际长度是多少厘米．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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