The stationery store shipped 460 homework books. After selling 278 books, another 140 books were shipped in. How many homework books are there in the store now?
文具店运来460本作业本，卖出278本后，又运进140本，现在商店还有多少本作业本？
<gadget id="calculator">460 - 278</gadget>
<output>182</output>

<gadget id="calculator">182 + 140</gadget>
<output>322</output>

<result>322</result>