Uncle Li uses a small truck to transport apples. He can transport 18 times a day, and he can transport 30 boxes each time. It happens to be shipped in 3 days. How many boxes of apples are there in total?
李叔叔用小货车运苹果，每天能运18次，每次能运30箱，3天正好运完，一共有多少箱苹果？
<gadget id="calculator">30 * 18 * 3</gadget>
<output>1_620</output>

<result>1_620</result>