Xiao Ming read a book of "Fairy Tales", and read 154 pages in 7 days. At this speed, he read it for another 3 days and just finished reading it all. How many pages does this book have?
小明看一本《童话故事》，7天看了154页，照这样的速度，又看了3天刚好全部看完．这本书一共有多少页？
<gadget id="calculator">154 / 7</gadget>
<output>22</output>

<gadget id="calculator">7 + 3</gadget>
<output>10</output>

<gadget id="calculator">22 * 10</gadget>
<output>220</output>

<result>220</result>