The school bought a batch of books, each of the 18 classes borrowed 124 books, and there are 30 books left. How many books are there in this batch?
学校买来一批图书，18个班每班借124本，还剩下30本，这批图书有多少本？
<gadget id="calculator">124 * 18</gadget>
<output>2_232</output>

<gadget id="calculator">2_232 + 30</gadget>
<output>2_262</output>

<result>2_262</result>