A book, I read 78 pages in the first three days of this week, and I read the remaining 125 pages in the last 4 days, how many pages does this book have?
一本书，这个星期的前三天我看了78页，后4天我看了余下的125页，这本书共有多少页？
<gadget id="calculator">125 + 78</gadget>
<output>203</output>

<result>203</result>