There are 18 people in the art group of our school, the number of calligraphy group is twice that of the art group, and the number of chorus group is 6 more than the total number of art group and calligraphy group. How many people are there in the chorus?
我们学校美术组有18人，书法组的人数是美术组的2倍，合唱组的人数比美术组和书法组的总人数多6人．合唱组有多少人？
<gadget id="calculator">18 * 2</gadget>
<output>36</output>

<gadget id="calculator">36 + 18</gadget>
<output>54</output>

<gadget id="calculator">54 + 6</gadget>
<output>60</output>

<result>60</result>