A large bottle of liquid medicine with a net content of 1 liter is divided into small bottles with a net content of 50 ml, how many bottles can be filled.
一大瓶净含量为1升的药液，分装在净含量为50毫升的小瓶内，可以装多少瓶．
<gadget id="calculator">1_000 / 50</gadget>
<output>20</output>

<gadget id="calculator">1 * 20</gadget>
<output>20</output>

<result>20</result>