There are 600 new books in Xinhua Bookstore, 192 copies were sold in the morning, and 249 copies were sold in the afternoon. How many copies are left?
新华书店的一种新书有600本，上午卖出192本，下午卖出249本，还剩下多少本？
<gadget id="calculator">192 + 249</gadget>
<output>441</output>

<gadget id="calculator">600 - 441</gadget>
<output>159</output>

<result>159</result>