The little boy likes to read "Grimm's Fairy Tales". He read 178 pages in the first 3 days of this week and the remaining 125 pages in the last 4 days. How many pages does this book have?
小男孩喜欢看《格林童话》，这个星期的前3天看了178页，后4天看了余下的125页．这本书共有多少页？
<gadget id="calculator">178 + 125</gadget>
<output>303</output>

<result>303</result>