There are 600 new books in Xinhua Bookstore, 152 were sold in the morning and 248 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152本，下午卖出248本，还剩下多少本？
<gadget id="calculator">152 + 248</gadget>
<output>400</output>

<gadget id="calculator">600 - 400</gadget>
<output>200</output>

<result>200</result>