If the scale of the school plan is 1:1000, and the playground is 20 cm long on the map, what is the actual length of the playground in meters?
如果学校平面图的比例尺是1：1000，在图上量得操场长20厘米，操场的实际长是多少米．
<gadget id="calculator">1 / 1_000</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">20 / (1/1_000)</gadget>
<output>20_000</output>

<gadget id="calculator">20_000 / 100</gadget>
<output>200</output>

<result>200</result>