On a map with a scale of 1:3000000, the distance between the two places on the map is 26 cm, so what is the actual distance in kilometers between the two places?
在比例尺为1：3000000的地图上，量得图上两地距离是26厘米，那么这两地的实际距离是多少千米．
<gadget id="calculator">1 / 3_000_000</gadget>
<output>1/3_000_000 = around 0</output>

<gadget id="calculator">26 / (1/3_000_000) / 100_000</gadget>
<output>780</output>

<result>780</result>