story book has 120 pages, and I planned to read it in 8 days, but actually finished it 2 days ahead of schedule. How many pages do you actually read each day?
一本故事书有120页，计划8天读完，实际提前2天就读完了．实际每天多读多少页？
<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<gadget id="calculator">120 / 6</gadget>
<output>20</output>

<gadget id="calculator">120 / 8</gadget>
<output>15</output>

<gadget id="calculator">20 - 15</gadget>
<output>5</output>

<result>5</result>