Xiaohong reads a book, 25 pages a day, and finishes it in 4 days. The number of pages in the other book is three times that of this book. How many pages does the other book have?
小红看一本书，每天看25页，4天正好看完，另一本书的页数是这本书的3倍，另一本书有多少页？
<gadget id="calculator">25 * 4 * 3</gadget>
<output>300</output>

<result>300</result>