On a 1:10000000 map, the distance between A and B on the map is 2.3 cm. What is the actual distance between A and B in kilometers?
在1：10000000的地图上，量得A、B两地的图上距离是2.3厘米，AB两地的实际距离是多少千米．
<gadget id="calculator">1 / 10_000_000</gadget>
<output>1/10_000_000 = around 0</output>

<gadget id="calculator">2.3 / (1/10_000_000) / 100_000</gadget>
<output>230</output>

<result>230</result>