The sports team has 17 people, and the chorus team has 45 people. The number of dance teams is 4 less than the total number of sports teams and chorus teams. How many people are in the dance team?
体育队有17人，合唱队有45人．舞蹈队的人数比体育队和合唱队的总人数少4人．舞蹈队有多少人？
<gadget id="calculator">45 - 4</gadget>
<output>41</output>

<gadget id="calculator">17 + 41</gadget>
<output>58</output>

<result>58</result>