On a map with a scale of 1:4000000, the distance between A and B is 5.4 cm. What is the actual distance between A and B?
在一幅比例尺是1：4000000的地图上，量得A、B两地之间的距离为5.4厘米，A、B两地之间的实际距离为多少．
<gadget id="calculator">4_000_000 / 100_000</gadget>
<output>40</output>

<gadget id="calculator">40 * 5.4</gadget>
<output>216</output>

<result>216</result>