The playground at Xiao Ming's school is 100 meters long. If it is drawn on the drawing at a scale of 1:2000, how many centimeters do you need to draw?
小明所在学校的去运动场长100米，如果按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">100 * 100 * (1/2_000)</gadget>
<output>5</output>

<result>5</result>