Zhang Wen put 10g of sugar into 90g of water. After dissolving, she drank 1/4 of this cup of sugar water. How many grams of sugar water did she drink?
张文将10g糖放入90g水中，溶解后，又喝了这杯糖水的(1/4)，她喝掉了多少g糖水．
<gadget id="calculator">90 + 10</gadget>
<output>100</output>

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

<gadget id="calculator">100 * (1/4)</gadget>
<output>25</output>

<result>25</result>