Students transported books, 18 packs each time, 50 books per pack, 5 times, how many books did they transport in total?
同学们运图书，每次运18包，每包50本，运了5次，一共运了多少本书？
<gadget id="calculator">50 * 18 * 5</gadget>
<output>4_500</output>

<result>4_500</result>