A new batch of books has arrived in the library. Among them, there are 216 story books, and 78 fewer technology books than story books. How many books are there in total?
图书馆新到一批图书，其中故事书有216本，科技书比故事书少78本，两种图书共多少本？
<gadget id="calculator">216 - 78</gadget>
<output>138</output>

<gadget id="calculator">138 + 216</gadget>
<output>354</output>

<result>354</result>