Measured on the map with a scale of 1:3000000, the distance between A and B is 5.2 cm. What is the actual distance in kilometers between the two places?
在比例尺是1：3000000的图上量得甲乙两城的距离是5.2厘米，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">5.2 / (1/3_000_000) / 100_000</gadget>
<output>156</output>

<result>156</result>