Xiao Ming puts 20 grams of sugar in 180 grams of water. After drinking (1/4), how many grams of sugar water are there in the cup?
小明在180克水中放入了20克的糖，喝掉了(1/4)以后，杯中还有糖水多少克？
<gadget id="calculator">180 + 20</gadget>
<output>200</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">200 * (1/4)</gadget>
<output>50</output>

<gadget id="calculator">200 - 50</gadget>
<output>150</output>

<result>150</result>