The area of a triangular piece of land is 0.4 hectares, and its base is 100 meters. So how high is it in meters?
一块三角形的地的面积是0.4公顷，它的底是100米．那么它的高是多少米？
<gadget id="calculator">0.4 * 10_000</gadget>
<output>4_000</output>

<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">4_000 * (1/50)</gadget>
<output>80</output>

<result>80</result>