The refinery refines 400 kg of oil in 5 days. According to this calculation, how many days will it take to refine 4,800 kg of oil?
炼油厂5天炼油400千克，照这样计算，要炼油4800千克，需要多少天？
<gadget id="calculator">400 / 5</gadget>
<output>80</output>

<gadget id="calculator">4_800 / 80</gadget>
<output>60</output>

<result>60</result>