If a machine part is 1 meter long, how many centimeters should it be drawn on a design drawing with a scale of 1:20?
一个机器零件长1米，画在比例尺是1：20的设计图上，应画多少厘米．
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 * 100 * (1/20)</gadget>
<output>5</output>

<result>5</result>