If the distance between the two places is 9 cm measured on a drawing with a scale of 1:3000, what is the actual distance in kilometers between the two places?
在一张比例尺是1：3000的图纸上量得两地间的距离是9厘米，则两地间的实际距离是多少千米．
<gadget id="calculator">1 / 3_000</gadget>
<output>1/3_000 = around 0.000333</output>

<gadget id="calculator">9 / (1/3_000) / 100_000</gadget>
<output>27/100 = around 0.27</output>

<result>27/100 = around 0.27</result>