A piece of parallelogram-shaped land is 200 meters long and 300 meters high, and a total of 42 tons of grain can be harvested. How many tons of grain can be harvested on average per hectare?
一块平行四边形土地，地长200米，高300米，共收粮食42吨，平均每公顷收粮食多少吨？
<gadget id="calculator">300 / 10_000</gadget>
<output>3/100 = around 0.03</output>

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

<gadget id="calculator">42 / 6</gadget>
<output>7</output>

<result>7</result>