On a map with a scale of 1:5000000, the distance between cities A and B is 8 cm. If it is drawn on a map with a scale of 1/2000000, how many centimeters should it draw?
在比例尺1：5000000的地图上，量得甲、乙两个城市相距8厘米，如果将它画在比例尺(1/2000000)的地图上，应画多少厘米．
<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>

<gadget id="calculator">8 / (1/5_000_000)</gadget>
<output>40_000_000</output>

<gadget id="calculator">1 / 2_000_000</gadget>
<output>1/2_000_000 = around 0</output>

<gadget id="calculator">40_000_000 * (1/2_000_000)</gadget>
<output>20</output>

<result>20</result>