A bottle of 600 grams of sugar water contains 50 grams of sugar. After drinking (2/5), add 33 grams of water. In order to make the concentration of the sugar water the same as before, how many grams of sugar must be added.
一瓶600克的糖水中含糖50克，喝掉(2/5)后又加入33克水，为了使糖水的浓度和原来一样，必须加入多少克糖．
<gadget id="calculator">50 * 33</gadget>
<output>1_650</output>

<gadget id="calculator">600 - 50</gadget>
<output>550</output>

<gadget id="calculator">1_650 / 550</gadget>
<output>3</output>

<result>3</result>