There is a cup of sugar water, there are 16 grams of sugar and 360 grams of water. If 4 grams of sugar are added, how many grams of water must be added to make it as sweet as before?
有一杯糖水，糖有16克，水有360克．如果又加4克糖，要加多少克水才能和原来一样甜．
<gadget id="calculator">16 / 360</gadget>
<output>2/45 = around 0.044444</output>

<gadget id="calculator">4 / (2/45)</gadget>
<output>90</output>

<result>90</result>