A canal is 6 kilometers long. How many centimeters should it draw on a drawing with a scale of 1:3000?
一条水渠长6千米，把它画在比例尺1：3000的图纸上，应画多少厘米？
<gadget id="calculator">1 / 3_000</gadget>
<output>1/3_000 = around 0.000333</output>

<gadget id="calculator">6 * 100_000 * (1/3_000)</gadget>
<output>200</output>

<result>200</result>