Xiaoli read a story book for 12 days. On average, I read 50 pages a day, and there are 175 pages left. How many pages are there in this book?
小丽看一本故事书，看了12天．平均每天看50页，还剩下175页，这本书一共有多少页？
<gadget id="calculator">12 * 50</gadget>
<output>600</output>

<gadget id="calculator">600 + 175</gadget>
<output>775</output>

<result>775</result>