There are three kinds of beverages in one meal. According to post-meal statistics, there are 65 bottles of the three beverages. On average, every two people drink one bottle of A beverage, every three people drink one bottle of B beverage, and every four people drink one bottle of C beverage. How many people are there for the dinner?
一次会餐共有三种饮料．餐后统计，三种饮料共用了65瓶，平均每两个人饮用一瓶A饮料，每三个人饮用一瓶B饮料，每四人饮用一瓶C饮料．问参加会餐的人数是多少人？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">6 + 4 + 3</gadget>
<output>13</output>

<gadget id="calculator">65 / 13</gadget>
<output>5</output>

<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<result>60</result>