A barrel, measured from the inside, has a side length of 3dm and a height of 3.8dm. How many bottles are needed to put such a barrel of beverage into a 50ml bottle?
一个桶，从里面量，底面的边长是3dm的正方形，高3.8dm，把这样的一桶饮料装入容积是50ml的瓶子里，大约需多少个瓶子？
<gadget id="calculator">1_000 / 50</gadget>
<output>20</output>

<gadget id="calculator">3 * 3 * 3.8 * 20</gadget>
<output>684</output>

<result>684</result>