Make a cup of sugar water, the ratio of sugar to water is 1:5, now there are 50 grams of sugar, how many grams of water should be added.
冲一杯糖水，糖和水的比是1：5，现在有50克糖，应加水多少克．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">50 * 5</gadget>
<output>250</output>

<result>250</result>