Prepare Chinese New Year food with mother. I bought 250 grams of fruit sugar, and the milk sugar I bought was 3 times that of fruit sugar, and the corn sugar was 2 times that of fruit sugar. How many grams of corn sugar did you buy?
跟妈妈一起准备过年的食品．买了250克水果糖，买的牛奶糖是水果糖的3倍，玉米糖是水果糖的2倍．买了多少克玉米糖？
<gadget id="calculator">250 * 2</gadget>
<output>500</output>

<result>500</result>