Draw 120 meters on the drawing at a ratio of 1:2000, how many centimeters do you need to draw?
将120米按1：2000的比例画到图纸上，需要画多少厘米．
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">120 * (1/2_000)</gadget>
<output>3/50 = around 0.06</output>

<gadget id="calculator">(3/50) * 100</gadget>
<output>6</output>

<result>6</result>