Dongyuan Supermarket shipped two vegetables, cucumber and beans. The mass ratio of cucumbers and beans is 4:5. Cucumber weighs 200 kilograms. How many kilograms are beans?
东苑超市运来黄瓜和豆角两种蔬菜，黄瓜和豆角的质量比是4：5，黄瓜是200千克，豆角是多少千克？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">200 / (4/5)</gadget>
<output>250</output>

<result>250</result>