Put 5 grams of washing powder into 50 grams of water to completely dissolve, and then add 3 grams of washing powder. If the concentration of washing powder is to remain unchanged, how many grams of water should be added.
把5克洗衣粉放入50克水中完全溶解后，再加入3克洗衣粉，如果要使洗衣粉浓度保持不变，则应该再加入水多少克．
<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">50 + 5</gadget>
<output>55</output>

<gadget id="calculator">5 / 55</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">8 / (1/11)</gadget>
<output>88</output>

<gadget id="calculator">50 + 5 + 3</gadget>
<output>58</output>

<gadget id="calculator">88 - 58</gadget>
<output>30</output>

<result>30</result>