parallelogram-shaped wheat field has a base of 400 meters and a height of 80 meters, with a total harvest of 20.8 tons of wheat. How many tons of wheat are harvested on average per hectare?
一块平行四边形麦地，底400米，高80米，共收小麦20.8吨．平均每公顷地收小麦多少吨？
<gadget id="calculator">400 / 10_000</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">80 * (1/25)</gadget>
<output>16/5 = around 3.2</output>

<gadget id="calculator">20.8 / (16/5)</gadget>
<output>6.5</output>

<result>6.5</result>