3 tractors cultivate 12 hectares of land in 2 days, how many hectares of land each tractor cultivates per day on average.
3台拖拉机2天耕地12公顷，平均每台每天耕地多少公顷．
<gadget id="calculator">12 / 2 / 3</gadget>
<output>2</output>

<result>2</result>