Li Hua plans to read a 240-page storybook in 12 days. In fact, I read 96 pages in the first 4 days. Based on this calculation, how many days can she finish reading this storybook in advance?
李华计划用12天看完一本240页的故事书．实际前4天看了96页．照这样计算，她能提前几天看完这本故事书？
<gadget id="calculator">96 / 4</gadget>
<output>24</output>

<gadget id="calculator">240 / 24</gadget>
<output>10</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>2</result>