On a map with a scale of (1/(30,000)), the measured distance between the two places is 4.5 cm. What is the actual distance in kilometers between the two places?
在比例尺(1/(30,000))的地图上，量得两地间的距离是4.5厘米，两地间的实际距离是多少千米．
<gadget id="calculator">1 / 30_000</gadget>
<output>1/30_000 = around 0.000033</output>

<gadget id="calculator">4.5 / (1/30_000) / 100_000</gadget>
<output>1.35</output>

<result>1.35</result>