fairy tale has 165 pages in total, and Xiaohong read 60 pages in the first 4 days. According to this calculation, how many days will it take to finish reading this book?
一本童话故事共有165页，小红前4天看了60页．照这样计算，看完这本书一共需要多少天？
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">165 / 15</gadget>
<output>11</output>

<result>11</result>