A triangular piece of land has a base of 400 meters and a height of 200 meters. A total of 40 tons of vegetables are harvested. How many kilograms of vegetables are harvested per hectare?
一块三角形地，底400米，高是200米，一共收菜40吨，平均每公顷收菜多少千克．
<gadget id="calculator">200 / 2 / 10_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">400 * (1/100)</gadget>
<output>4</output>

<gadget id="calculator">1_000 / 4</gadget>
<output>250</output>

<gadget id="calculator">40 * 250</gadget>
<output>10_000</output>

<result>10_000</result>