Each bottle of cod liver oil drops is 10 ml, and now there are 0.4 liters of cod liver oil, how many bottles can be filled?
每瓶鱼肝油滴剂10毫升，现在有鱼肝油0.4升，可以装多少瓶？
<gadget id="calculator">0.4 * 1_000</gadget>
<output>400</output>

<gadget id="calculator">400 / 10</gadget>
<output>40</output>

<result>40</result>