bucket of pure water is 20 liters in total, pour it into a small bottle with a capacity of 500 ml, and each small bottle of water can be shared with 2 people. How many people can drink this bucket of water?
一桶纯净水共20升，倒入容量是500毫升的小瓶中，每小瓶水可以分给2个人喝．这桶水共可以分给多少人喝？
<gadget id="calculator">20 * 1_000</gadget>
<output>20_000</output>

<gadget id="calculator">20_000 / 500</gadget>
<output>40</output>

<result>40</result>