A bottle of coffee is 450 grams in total, and each cup needs 20 grams of coffee and 5 grams of cube sugar. How many grams of cube sugar is needed to finish this bottle of coffee?
一种瓶装咖啡共450克，每冲一杯需要20克咖啡和5克方糖，冲完这瓶咖啡，大约需要多少克方糖？
<gadget id="calculator">5 / 20</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">450 * (1/4)</gadget>
<output>225/2 = around 112.5</output>

<result>225/2 = around 112.5</result>