A vegetable field in the shape of a triangle has an area of 0.5 hectares, its height is 500 meters, and its bottom is in meters.
一块形状是三角形的菜地，面积是0.5公顷，它的高是500米，底是多少米．
<gadget id="calculator">0.5 * 10_000</gadget>
<output>5_000</output>

<gadget id="calculator">2 / 500</gadget>
<output>1/250 = around 0.004</output>

<gadget id="calculator">5_000 * (1/250)</gadget>
<output>20</output>

<result>20</result>