Xiao Min reads a book and reads 24 pages in the first 3 days. According to this calculation, how many days will it take to finish reading this 120-page book?
小敏看一本书，前3天看了24页，照这样计算，看完这本120页的书，一共多少天？
<gadget id="calculator">24 / 3</gadget>
<output>8</output>

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

<result>15</result>