Draw a rectangular piece of land with a length of 300 meters and a width of 200 meters on a plan with a scale of 1:2000. What is the area of the land on the map in square centimeters?
把一块长300米、宽200米的长方形土地画在一张比例尺是1：2000的平面图上，图上这块地的面积是多少平方厘米．
<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">200 * 100 * (1/2_000) * 300 * 100 * (1/2_000)</gadget>
<output>150</output>

<result>150</result>