1 bottle of drink has 200 ml, how many bottles of this drink is exactly 1 liter.
1瓶饮料有200毫升，多少瓶这样的饮料正好是1升．
<gadget id="calculator">1_000 / 200</gadget>
<output>5</output>

<gadget id="calculator">1 * 5</gadget>
<output>5</output>

<result>5</result>