A village needs to harvest 3.6 hectares of wheat, and a total of 2.4 hectares were harvested in the first 3 days. According to this calculation, how many days are left to harvest?
某村要收割3.6公顷小麦，前3天共收割2.4公顷．照这样计算，余下的还要收割多少天？
<gadget id="calculator">2.4 / 3</gadget>
<output>0.8</output>

<gadget id="calculator">3.6 / 0.8</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 - 3</gadget>
<output>1.5</output>

<result>1.5</result>