A vegetable field is 300 meters long and 200 meters wide. A total of 18 tons of vegetables were collected. How many tons of vegetables are harvested per hectare?
一块菜地长300米，宽200米．一共收蔬菜18吨．平均每公顷收蔬菜多少吨？
<gadget id="calculator">200 / 10_000</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">300 * (1/50)</gadget>
<output>6</output>

<gadget id="calculator">18 / 6</gadget>
<output>3</output>

<result>3</result>