A bottle of beverage with 20% fruit and vegetable juice content, if you add water with the same quality as the beverage. What percentage is the fruit and vegetable juice content of the drink at this time?
一瓶果蔬汁含量为20%的饮料，如果加入与饮料质量相同的水之后．这时饮料的果蔬汁含量为百分之几？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">(1/5) / 2</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>