A team of workers came to build the school building. The team leader went to the cafeteria to collect 55 bowls, and said to the cook, "One rice bowl for each of them, one vegetable bowl for two people, and one soup bowl for three people." Do the math, how many of them are there?
一队工人来修建校舍，队长到食堂领55只碗，并对炊事员说：他们一人一只饭碗，两人合一只菜碗，三人合一只汤碗．算一算，他们共有多少人？
<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>