In our class, 18 people participated in the painting group, accounting for (1/3) of the whole class, and the number of people participating in the chorus group accounted for (2/9) of the whole class. How many students are there in the chorus group?
咱们班有18人参加了绘画小组，占全班同学的(1/3)，参加合唱小组的人数占全班人数的(2/9)．参加合唱小组的同学有多少名？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18 / (1/3)</gadget>
<output>54</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">54 * (2/9)</gadget>
<output>12</output>

<result>12</result>