In a bar graph, 9 tons are represented by a straight bar of 1.5 cm long, and 24 tons are represented by a straight bar of how many centimeters long.
在一幅条形统计图里，用1.5厘米长的直条表示9吨，用多少厘米长的直条表示24吨．
<gadget id="calculator">9 / 1.5</gadget>
<output>6</output>

<gadget id="calculator">24 / 6</gadget>
<output>4</output>

<result>4</result>