A tractor needs to plow 9.6 hectares of land, and 3.6 hectares were plowed in the first 3 hours. According to this calculation, how many hours are left to plow?
一台拖拉机要耕9.6公顷地，前3小时耕了3.6公顷，照这样计算，剩下的几小时耕完？
<gadget id="calculator">9.6 - 3.6</gadget>
<output>6</output>

<gadget id="calculator">3.6 / 3</gadget>
<output>1.2</output>

<gadget id="calculator">6 / 1.2</gadget>
<output>5</output>

<result>5</result>