In a bar graph, 60 people are represented by 3 cm bars, and 400 people are represented by bars of how many centimeters long.
在一个条形统计图里，用3厘米的直条表示60人，用多少厘米长的直条表示400人．
<gadget id="calculator">60 / 3</gadget>
<output>20</output>

<gadget id="calculator">400 / 20</gadget>
<output>20</output>

<result>20</result>