Xiaohong and Xiaoming attend a party. In the party, Xiaohong sees twice as many students who do not wear glasses as students who wear glasses. Xiaoming sees students who wear glasses as students who do not wear glasses (2/3). How many students participated in the party?
小红和小明参加一个联欢会，在联欢会中，小红看到不戴眼镜的同学是戴眼镜同学的2倍，小明看到戴眼镜的同学是不戴眼镜同学的(2/3)，参加联欢会的共有多少名同学．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(2/5) - (1/3)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">1 / (1/15)</gadget>
<output>15</output>

<gadget id="calculator">15 + 1</gadget>
<output>16</output>

<result>16</result>