A tractor plows 1.2 hectares per hour and 4.8 hectares in the morning. How many hours did you work in the morning?
一台拖拉机每小时耕地1.2公顷，上午耕地4.8公顷．上午工作了几小时？
<gadget id="calculator">4.8 / 1.2</gadget>
<output>4</output>

<result>4</result>