The number of people in the cafeteria has increased sharply, and the tableware can only be used together. Each person can use one rice bowl, only one vegetable bowl can be shared by two people, one soup bowl can be shared by three people, 55 bowls are enough, please help to calculate how many new guests have come to the cafeteria.
食堂猛增一批人，餐具只能合着用．每人可用一个饭碗，菜碗只能每两个人合用一个，汤碗每三人合用一个，55只碗正够分，请你帮助算一算，食堂来了多少位新客人．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">1 + (1/2) + (1/3)</gadget>
<output>11/6 = around 1.833333</output>

<gadget id="calculator">55 / (11/6)</gadget>
<output>30</output>

<result>30</result>