A story book with 512 pages. Xiaoping read it for two weeks, an average of 24 pages a day, how many pages did he not read?
一本故事书512页．小平看了两个星期，平均每天看24页，还有多少页没看？
<gadget id="calculator">24 * 7 * 2</gadget>
<output>336</output>

<gadget id="calculator">512 - 336</gadget>
<output>176</output>

<result>176</result>