Xiaohong reads a book. She reads 38 pages every day. She has read it for 4 days and still has 128 pages left. How many pages does this book have?
小红看一本书，她每天看38页，已经看了4天，还有128页没有看．这本书一共有多少页？
<gadget id="calculator">38 * 4</gadget>
<output>152</output>

<gadget id="calculator">152 + 128</gadget>
<output>280</output>

<result>280</result>