There are 434 story books, and 178 fewer technology books than story books. How many books are there in total?
故事书有434本，科技书比故事书少178本，请问两种书一共有多少本？
<gadget id="calculator">434 - 178</gadget>
<output>256</output>

<gadget id="calculator">256 + 434</gadget>
<output>690</output>

<result>690</result>