Draw a tunnel with a length of 1000 meters according to the scale of 1:50000, how many centimeters should be drawn to represent the tunnel.
按1：50000的比例尺画一条长为1000米的隧道，应画多少厘米长的线段表示这条隧道．
<gadget id="calculator">1_000 * 100</gadget>
<output>100_000</output>

<gadget id="calculator">1 / 50_000</gadget>
<output>1/50_000 = around 0.00002</output>

<gadget id="calculator">100_000 * (1/50_000)</gadget>
<output>2</output>

<result>2</result>