There is a bottle of coffee that weighs 420 grams in total. Each cup needs 15 grams of coffee powder and 6 grams of cube sugar. How many grams of cube sugar is needed to finish this bottle of coffee?
有一瓶咖啡，共重420克，每冲一杯需要15克咖啡粉和6克方糖，冲完这瓶咖啡，需要多少克方糖？
<gadget id="calculator">420 / 15</gadget>
<output>28</output>

<gadget id="calculator">28 * 6</gadget>
<output>168</output>

<result>168</result>